CaptTom: Remember the "chartlet" is from 1986. You are using an out of date browser. You must log in or register to reply here. Used in my 2015 Ram 2500. Works great! 96 F250 PS XLT 4X4 long box, 5sp,4.10, manual hubs,pyro+boost guages, Dark Toumaline, add a leaf, Dale's TYMAR, and HX hose, downpipe, coolant filter, Luk clutch. I know of owners in Texas that run the 5w40 year round. They're engineered that way. Uniquely formulated heavy duty engine oil to provide enhanced lubricant performance in a wide range of Cummins diesel engines and specially designed to support longer drain intervals in … Till now I’ve ran engine 6k miles on this oil haven’t had any problems engine temperature runs smooth; So far so good. Any issues with running 5W40? If you go to Engine oil ? Compra online gli oli lubrificanti e grassi al miglior prezzo. Cummins approved for my 2013 RAM. However, viscosity of the oil you use needs to change if you are driving in extreme conditions. Unless she has continual cold starts with no block heater, 15w40 is fine. Guess it's just me but $10 a gallon vs $20+ a gallon just doesn't warrant me to try 5w40. Approved or Recommended for applications where Cummins CES 20086, Mack EOS-4.5, Volvo VDS-4.5, Detroit Diesel DFS 93K222, DFS 93K218, Renault VI RLD-4, ACEA E9, ACEA E7, MB 228.31, Ford WSS-M2C171-F1, Caterpillar ECF-3, or Chrysler MS-10902 are specified 00 ($11.58/case of oil) Thanks for the info Ken. If the 5W40 doesn't hold up, you can switch to 15W40 with confidence. I'm sure that ol Cummins will love the Rotella 5W40 either way. If you're attempting extended drain intervals then yes you should use synthetic, and you should being that you've went to the expense and trouble to install a bypass filter setup.How many gallons of oil does the N14 hold? Spend the money on clean air filters and clean fuel filters as well as coolant. The N-14 is not hard on oil AT ALL! T6 will take you to 20K with by-pass easy as pie. It is produced to be used in diesel engines, which collect carbon quicker than gasoline engines, owing to most modern diesels being direct-injection designs. There also others, but are not available locally, e. 4000 Motion 15W-40. N-14 failures were usually coolant or fuel related, never oil related. 10000 miles is the normal change interval. First, I'll explain what the numbers in 5w20 and 5w40 mean. Just run 15w40. The 5 means that the oil will flow at zero celsius the same way a 5-weight oil would. Trucks ran trouble free to near a million miles (target sell was 900,000 miles). Q: Are synthetic oils better for 6.7 Cummins … ... Valvoline Premium Blue 15W-40 Diesel Engine Oil . If you are set up to sample, you can conduct your own test. Most people may run a 5W-40 in the winter, or year round. 5W-40 vs 15W-40 for 6.7 Cummins. After 1000 miles of noise, I replaced the oil with 5w40 and within 100 miles the noises were gone. Then there are people who's truck will not hardly run anything but 5w40. http://pqiadata.org/Shell_Rotella_T4_15W40_4192017.html, http://www.pqiamerica.com/June%202014/ExmoDelvac13001540.htm, http://www.pqiamerica.com/June%202014/shellrotellat6.htm, Oil recommendations for HD portable generator, 11th UOA, 07 FJ 4.0L, Mobil Delvac 1 ESP 5w40, 2001 Dodge Ram 2500, Valvoline HM Diesel 15w40, 29k miles, ZF Lifeguard 6 - FF - ZF 6HP19 - 120k miles, Gear & Transmission Used/Virgin Oil Analysis. We were freezing up until about a week ago. If you can use the starting advantage then run the syn. The N14 was built to 2002 and I have seen the last N14 engine that rolled off the line. 5w40 vs 15w40.Delo. Finally, look up what oils the latest version of the N14 were authorized to use. 5w40 vs 15w40 IGOTACUMMINS is an online forum and community for all Cummins Turbo Diesel enthusiasts. Then you will know ... and learn something on the way. What Chuckster57 said. Or Mobil Delvac MX. Dieselsite Coolant filter & Transmission filter & 203 Thermostat & WW2 & TurboMaster & inter-cooler boots. The 5w and 15w stand for degrees. Save Share. I haven’t filled it with oil yet, but want to run synthetic and do EOC. I do not believe the way guys are going nuts in here over a 5w-40 evaporating, and burning because its thinner, is funny, as it does get to a 40 weight with heat. I really depends upon where you live. Year. Despite being in Arizona, I don’t live at the lower elevations. Rotella. These additives have already passed all of the API licensing requirements in a petroleum or synthetic based formulation. Use it in my 2008 Dodge Ram 2500 Diesel. Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil 6. Cummins Dodge Ram '07-'09 Standard Maintenance Kit Sale price $139 32 $139.32 Regular price $154 80 $154.80 Save $15.48 Valvoline All-Fleet Plus 15W40 4 L - 886443 It definitely helped in the cold morning start ups in comparison to the 15w-40 Amsoil. Truck is an old school IDI diesel with bypass filtration. I see the 5W40 less and the 15W40 more. *Compared to 15W-40 oils. The 15W-40 oil is for temperatures above 0 degrees Fahrenheit while the 5W-40 is for extremely cold temperatures. Wading through the combination of marketing spin, specifications, and technical information can make understanding which product to use and finding the best value in motor oil a challenge. Will update when I change the oil next time. Higher starting TBN doesn't necessarily mean it lasts longer though. That opinion is based on operating a variety of equipment that never reaches the miles or hours limits within one year. i just switched mine over to amsoil 5w40 diesel synthetic havent gotten enough miles put on it since then to decide if its any better than the hvyduty diesel and marine 15w40 amsoil, Correct. Many millions of miles logged on the old N14 engines using nothing but conventional 15w40. Use 5W40, test every 5K (or one year) or so. The motor is a Cummins N14. Product Comparison: Mobil 1 Turbo Diesel Truck 5W-40 vs Shell Rotella T6. There is no advantage to synthetic unless the conditions call for it. Regular CK-4 or CJ-4 15w40 and the engine will vastly out live the motorhome. This is because the 5w30 motor oil has a smooth effect on the oil pump and also a more suitable flow through the engine when hot. We then utilize a blend of synthetic basestocks with known performance characteristics as a replacement for the petroleum basestocks to optimize performance in areas of lubricity, volatility, viscosity index, oxidation and nitration resistance, pour points, flash points, deposit control, soot handling, emissions, etc. Royal Purple 15W40 Oil. You don't need it for the winter weather starting obviously but I would feel more comfortable with the synthetic going 20k miles with the bypass filter setup. Few things: Back to the number of cold starts, if you have to start the MH regularly in cold weather, that's when the 5W40 is more indicated because cold starts with thick oil tend to be the ones with more wear, more filter bypass events, etc. JavaScript is disabled. Temperatures or extended drains, maybe, but there are many, many UOA that prove that a conventional will do just as well as a full synthetic, depending on application. Here on Long Island, the temp rarely if ever even gets to 0*, much less stays under it for any period of time. You'll be fine with either. Usuall the 5w40 is a synthetic and the 15w40 is dino but can be synthetic. I can’t find anyone who has run the 5W40 in that engine, hence my concerns. Also, a little fact most people do not know... AMSOIL was the. No other oil company has such a vast data base of the performance of synthetic lubricants over extended drain intervals. A $20 oil analysis kit is a LOT cheaper than 14 gallons of synthetic oil!!!!!!! TBN can drop faster or slower depending on oil and conditions. Trying to see if it is a critical thing that I switch to a different oil. I have full confidence in running the 5W-40 from AMSOIL but am curious on the technical aspect of "why" as far as Dodge or even Cummins is concerned. Convient & what I wanted. Schaeffer's. 7. Use 5W40, test every 5K (or one year) or so. It can also be used with synthetic and conventional engine oils. Reply. Driven Diesel Fuel Tank Mod & Pre-Pump Filter. 5W30 vs. 5W40 When it comes to choosing between 5w30 and 5w40, many people prefer the former. Most car owners don’t even bother with the issue of an oil change for their vehicles. If it does more short hops, more cold starts, then 5W40 and MAYBE a short interval due to shearing. That is always a good indicator as well. Maybe you can turn up some trustworthy evidence out there in posted UOAs. View on Amazon. They are designed to provide excellent protection against oxidatio Mostly just hate wasting 14 gallons of oil when I don’t need to. The main difference between the two is the velocity of the oils. John Wood's valve body. If that's how the MH is operated, the 15W40 is the way to go IMO. However it seems that everyone wants to use 10W30 in the 6.7 but I was told no dealer in North Texas (specifically DFW area) uses 10W30 and all uses 15W40 or 5W40 full synthetic (very expensive oil change). The Premium Blue brand offers a full lineup of conventional, synthetic blend, and synthetic engine oils developed for diesel, gas, and natural gas engine applications. Factory fill from Cummins is Valvoline premium Blue 5w40 full synthetic because they don't know what climate they will be operating in. Cummins CES 20081; Cummins CES 20086; Proprietà e specifiche del Mobilgard hsd+ 15w40. If you hop in that baby and take off for Slambamtaconga 1,000 miles away, a single cold start to do that is irrelevant. The cold mornings (low 30s) made the starts rather rough. Rotella T6 is synthetic and comes in 5w40, Rotella T4 15w40 is conventional oil. Then we work with the additive company to. improver to ensure viscosity retention throughout extended drain intervals. ... 2014 Ram 1500 ecodiesel, 2014 Ram 1500 5.7, 2009 Ram 2500 Cummins 6.7, 2006 Ram 2500 Cummins 5.9, 2005 Ram 3500 Cummins 5.9, 1999 Ram 3500 Cummins 5.9, 1995 Ram 1500 360, 1983 Ram D150 318, 1975 Ram D150 360. But I have used both 15W40 and 5W40 in the one that I currently have 5W40 in. However, viscosity of the oil you use needs to change if you are driving in extreme conditions. Meets the new MS 20087 spec. Valvoline™ Premium Blue One Solution™ Gen2 is a premium blend engine oil developed thru our 25 year close collaboration with Cummins to perform and protect engines fueled by diesel, natural gas, or … Royal Purple API-licensed Motor Oil SAE 15W-40. I know of owners in Texas that run the 5w40 year round. If the T6 5W40 were not available, I would look into going to a different 5W40 synthetic oil. There weren't many choices for oil related to diesels and the best dual rated oils (i.e. AMSOIL INC. has been collecting used synthetic oil samples from passenger cars since 1982. I think with UOA and the bypass filter, I’m hopeful. here in south dakota the ford dealer has me and our company using 10w-30 diesel oil in all of our powerstrokes 7.3, 6.0, 6.4 year around and have no complaints or problems. Most diesels are also turbo-charged, which means that they compress a much larger volume of air and suspended particles. Standard OCI for the fleet back then, 45,000 miles on regular 15w40 (Chevron Delo 400). Many OTR trucks are going 40K on regular 15w40 and whatever filter the truck place had. For a better experience, please enable JavaScript in your browser before proceeding. Why I use certain oil. Come join the discussion about PowerStrokes, performance, modifications, troubleshooting, towing capacity, maintenance, and more! Valvoline Premium Blue is THE ONLY ONE™ engine oil exclusively recommended and endorsed by Cummins. If you are set up to sample, you can conduct your own test. Buy Royal Purple 15W40 Oil. Oil can't read a calendar so my advice is forget the "one year" stuff. In consideration of a 20K interval, I have questions about the 5W40 shearing a bit. Differences between 5w40 vs. 5w50 motor oil. Schaeffer Manufacturing Co. 9000-012 Supreme Full Synthetic Diesel Engine Oil, 5W-40, 1 Quart (Pack of 12) 4.9 out of 5 stars 89 $139.00 $ 139 . Did you ever figure out if it's API certified? Over the last 15 years or so I have UOA at one year, two, years, three years and found no issues. Are all mentioned in this video. Improved Wear Performance. This replaces the inexpensive and less shear stable V.I. My last oil change I switched to Shell Rotella Syntehtic 5w40. The oil viscosity's go by temperature. We do laboratory bench tests before running field tests to verify the superiority of the synthetic formula in actual use. I ran synthetic 15w40 in my truck until I reached 33,000 miles. Valvoline™ Premium Blue™ is “The Only One”™ solely endorsed and suggested by Cummins. Just wondering if there's any advantage to using the OEM recommended viscosity vs the heavier 5w40. You should have no problems with it. My plan was to go as long as possible using analysis. It says it can be used where API specs are necessary. 15W40 oil changes less with change in temperature. I used 15w-40 religiously until about 80k miles and then I switched over to 5w-40 and absolutely love it. I figure with the bypass filter I should be able to easily go 20,000 miles. Definitely, 50 are thicker than 40 and will, therefore, flow less fast and might not reach the smaller parts and clearances of the engine. Bronchi Combustibili distributore autorizzato. I have a 1999 Monaco Signature 45’ Class A. Then you will know ... and learn something on the way. Better Fuel Economy. Now we are up to SN/CJ-4 and you can buy 0W40 rated diesel oil. Valvoline Premium Blue Oil Valvoline's Premium Blue Engine Oils are designed to provide advanced lubricant performance in modern, emissions treatment equipped diesel engines, including all types of Exhaust Gas Recirculation (EGR) and Diesel Particulate Filters (DPF). No worries. You'll find an informative tech area, a place for Member’s Journals, Vendors with Special Members Pricing, Plus More! F. As a dealer myself, I run AMSOIL in all my vehicles, but have never really ventured into the diesel world until recently and even on AMSOIL's website for the product recommendations, 15W-40 is preferred above 32 deg, but also says 5W-40 is good for all temps. 5W40 Synthetic VS regular 15W40. But you can also pick another variant from the line such as the cheaper and more common 15W40 depending on the condition where you will be driving the vehicle. What this means is that in cold temperatures (like in winter), your 5W30 oil will flow much more freely at the SAE viscosity grade of 5 and thickens up to 30 in hot weather. As mentioned above, I prefer lower weight oils due to the increased fuel economy, but never having a diesel before, why would even AMSOIL say the 15W-40 is preferred above 32 deg. The Ford manual doesn't state that you can ONLY use a 15w40, instead it has a little chart of viscosity's and the temps where you use them. Probably not, but in Arizona, no need to. 5W-40 all things equal is inferior to a 15W-40 due to the thinner base oil blend and the viscosity improvers needed. Example, 5 = 5 degrees w=Winter. In the forum you will find an informative tech area, a place for Member’s journals, Vendors with special Members pricing, and more! 5w40 vs 15w40 IGOTACUMMINS is an online community for all Cummins Turbo Diesel enthusiasts. Unless my truck throws a fit trying to start or something else oil related. For the price of synthetic vs dino oil and the fact I go longer, add on better engine protection etc, its a winner for me. We also continue to monitor the performance of the oil through close scrutiny of tens of thousands of oil analysis tests per year across a wide variety of vehicles all around North America and the World. It looks like only the 15w40 is registered with the API's site. Neither of those are available in my town. They are designed to provide excellent protection against oxidatio There are people who run 15w40 all the time and have no trouble. If they recommend 10–40, then use 10–40. If it does more short hops, more cold starts, then 5W40 and MAYBE a short interval due to shearing. If the MH is stored well in a relatively dry climate, used regularly and when used driven enough to boil off crankcase moisture, the oils is good out to several years IMO. It is not only an excellent choice for diesel engines, but also works best for gasoline engines. Usuall the 5w40 is a synthetic and the 15w40 is dino but can be synthetic. Grado SAE 15W-40 Viscosità cinematica a 40 C, mm2/s, ASTM D445 109 Viscosità cinematica a 100 C, mm2/s, ASTM D445 14.1 Indice di viscosità, ASTM D2270 130 Densità @ 15 C, g/ml, ASTM D1298 0.875 Pour Point, °C, ASTM D97 -33 Whether you’re looking to upgrade your comfort, style, or accessibility, we have picks to fit a variety of needs and budgets. Somehow they have yet to blow up on a diet of cheap 15w40. The Premium Blue brand offers a full lineup of conventional, synthetic blend, and synthetic engine oils developed for diesel, gas, and natural gas engine applications. Valvoline Premium Blue Classic if it's still available. 10w40 vs 5w40 which one is better for your Car? improver used in the API licensed petroleum formula. Every one gets all worked up on cold starts and seems to need 0 or 5w40. ( 10w 40 vs 5w 40) 5w40 vs 10w40. 5W40 didn't exist then. The 2019 CGI Cummins doesn't call for 15W40 at all. Is there anyone out there running 15w40 in their 6.7s? You should have no problems with it. Valvoline/Cummins Premium Blue 15W40 Union 76 Guardol QLT 15W40 Union 76 T5X Heavy Duty 15W-40 Kendall Super-D 3 15W40, 10W30 Quaker State FCI HDX Plus 15W40 Exxon XD-3 Extra 15W40 Phillips 66 Super HD II 15W-40 Conoco HD Fleet Supreme 15W-40, 10W-30 Citgo Mystik Premium Fleet 15W-40 Citgo Mystik JT-8 15W-40, 15W-50, 10W-30 One of the greatest things about this diesel engine oil is its versatility. 5W40 Motor Oil – Comparison of 2020. I run 5w-40 in every climate from below 0 to 100+F temps. One of the most important things that you need to know about 6.7 Cummins synthetic oil is that the different viscosity ratings provide various levels of performance, specifically in relation to temperature. The manual calls for 14 gallons. The truck runs much better and starts alot faster with smoother idle. My only synthetic option is the Rotella T6 5W-40. Valvoline 5W-40 Full Synthetic Diesel Engine Oil. However it seems that everyone wants to use 10W30 in the 6.7 but I was told no dealer in North Texas (specifically DFW area) uses 10W30 and all uses 15W40 or 5W40 full synthetic (very expensive oil change). 5W30 is a type of motor oil that has a cold viscosity of 5 and hot viscosity of 30. 6.0 Transmission Cooler. The only advantage the 5w- will buy you is below freezing starts. Just added a FS2500 bypass filter plus the factory Fleetguard FF filter. It can assist better with cold starting. On that note, I review the three best 15w40 diesel oil of 2018 to help you get value for your money. I hate wasting good oil just because it’s been. Castrol Magnatec 5L 10W-40 $23. Improved fuel economy potential over conventional 15W-40 oils; Valvoline™ Premium Blue™ has a unique 10,000 mile drain extension in Cummins® X15 engines enabling up to 60,000 miles when average fuel efficiency is 6.5 mpg or higher; Enhanced protection against oil oxidation The results were proven through extensive collaborative development efforts, covering millions of miles of real-world truck testing. to develop an API-rated 100 percent synthetic motor oil, back in 1972. Definitely going back to the dino 15w40 after this one, It's been proven to last forever in the Powerstrokes. viscosity table and viscosity chart, you will see a slight difference of the 15w-40 having better density and kinetic viscosity over a 5w-40. That being said and as mentioned … IF I still lived there, I would still be running 15W40, regardless of the 40 "hot" rating. Le test a pour but de montrer comment efficacement Test frictiomètre 15w40 mineral carrefour Diesel - 2l (acheté en 2019) ENGINE SOUND TEST Mineral 15w-40 vs Synthetic Oil 5W40 Shell Helix Ultra - Prueba Sonido Motor. I don’t think I’ll put more than 20k per year anyway. Royal Purple 15W40 Oil I may be living in the past just a little and the oil would likely do fine, but if it were mine, I would sample 5W40 regularly to monitor viscosity to satisfy myself. ... Grand Rapids, MN. Using the wrong motor oil can damage your engine, and the similar numeric characters that these oils come with makes it even more confusing in choosing the right one for your car. AMSOIL Inc.'s products and formulations outperform API licensed oils. The following is a breakdown of motor oil […] Ever seen 15w40 dino oil at sub zero temps, its like molasses, compare it to synthetic 5w40, that's why it takes time for the oil pressure to move. Valvoline™ Premium Blue™ is “The Only One”™ solely endorsed and suggested by Cummins. For a better experience, please enable JavaScript in your browser before proceeding. 5W30 was new and whiz-bang. 3. I hate wasting good oil just because it’s been a year. Best 15w40 diesel oil of 2018. I'm pretty sure you won't find a full synthetic in 15w40. The 250,000 mile engine only consumed 1/2 quart of this oil over 6000 miles. Data Sheet on Shear Stability of our 5W-40 and fuel economy, AMSOIL Heavy Duty Diesel and Marine CI-4 (AME), Buy Online at Wholesale Factory-Direct - Click Here, AMSOIL Premium CJ-4 Synthetic 5W-40 Diesel Oil (DEO), AMSOIL Premium CJ-4 Synthetic 15W-40 Diesel Oil (DME), AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil (AME), http://eolcs.api.org/DisplayLicenseInfo.asp?LicenseNo=0995, Synthetic Blend 15W-40 Heavy Duty Motor Oil (PCO), AMSOIL OE 15W-40 Synthetic Diesel Oil (OED), AMSOIL OE 10W-30 Synthetic Diesel Oil (OEC), 99 & up 7.3L Power Stroke Engine & Drivetrain, 99 & up Upgrades and Aftermarket - 7.3L Engine, 7.3L IDI Diesels (Not Powerstrokes) 1988-1993, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Even 15W40 was relatively new in 1986. for gas and diesel engines) combined SF/SD API specs. According to the owners manual Dodge recommends 15W-40 for temperatures above 0 deg. We also will utilize a highly shear stable V.I. 280k on 15w40 and no internal problems. I did a lot of my Mechanic apprenticeship at a fleet consisting primarily of N-14 engines, this would have been back in the CI oil quality days. A forum community dedicated to all Ford Diesel owners and enthusiasts. I used it in my '06 5.9 Liter Dodge Cummins turbo diesel truck. vs… i think you are wasting your money on expensive oil, my old girl had 280k before i quit dumping money in it due to an electrical issue and the injectors not turning on, but when i get back to her i'm gonna fix er and continue to run her on reg oil. Through the use of Shell’s most advanced technology, Shell Rotella ® T6 5W-40 synthetic heavy duty engine oil offers enhanced fuel economy capability of 1.5%* that can save money in fuel consumption, without compromising engine protection or durability. Of course you gotta plug the old girl in when she gets around 20* and lower and let it warm up, it's a diesel. Getting the right motor oil and the best value both play a role in managing preventive maintenance and expenses. Motul 8100 X-cess 5W-40 Synthetic Gasoline and Diesel Engine Oil 7. How much of an extended drain do you want? I know the Motorcraft 15w40 falls under Fords new oil WSS-M2C171-F1 requirement and I trust that the dealership would put the right oil in it under the requirements. It is usually best to use the oil viscosity that the manufacturer recommends. It is a multigrade oil. Do a simple oil sample every 10,000 miles if you are worried (a good sample test like Polaris or Blackstone...not a table top unit at a Speedco or truck dealership) but you should EASILY be able to go 25,000 miles on regular oil. G-Profi MSI PLUS 15W40. IH Bellowed Up-Pipes, RiffRaff AIH delete plug, Riffraff FRx Kit. It's fine to switch between the 2 weights. Exactly how many miles are you thinking of running the oil? Valvoline Premium Blue Extreme SAE 5W-40 Synthetic Engine Oil 4. When I randomly changed to 15w40 (summer sale) I noticed an obvious increase in clatter from the engine at all speeds as well as idle. Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 5. So the owner's manual in my 2015 Ram says to use 15W40 oil in the 6.7 Cummins diesel, unless the temp is going to routinely be below 0*, in which case you should use 5W40. JavaScript is disabled. The Synthetic 5w-40 just says that the 40 weight oil will maintain a 40 weight viscosity down to 5 degrees vs. 15 degrees for the conventional. It may not display this or other websites correctly. 1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually. If they recommend 10–40, then use 10–40. 02 F250, 4X4, 4R100, 3.73, B&M Transmission Pan, Edge CTS Digital Gage, Tymar 4" Exhaust, Tymar Intake & HPX & TS 6 Position Chip. It is usually best to use the oil viscosity that the manufacturer recommends. My limit is set at four years but seldom does anything get out that far except for one truck, which is due for a change this year after four years and about 5,000 miles. 99.5 f250 7.3 4x4- 295k FF 160/30, PHP Hydra, S&B CAI, 4" Exhaust, RR 6/6 billet wheel/KC S300 turbine wheel/1.0 turbine housing, Autometer Gauges, Built Trans, Trucool Max, 08 Tow Mirrors. BD CCV filter. Am doing a story for, Heavy Duty Engine Oil (HDEO) - Diesel Vehicles, will run forever and ever on the cheapest 15W-40. Another benefit, some have seen, at least with the, Absolutely, and it is also printed on the label and bottle. What would cause the increase in engine clatter. If your only synthetic option is T6 in 5w40 then run it if you are dead set on extended drains. Synthetic oil does make the truck run a little smoother. If that's how the MH is operated, the 15W40 is the way to go IMO. 5W30 vs. 5W40 Motor Oil – Comparison of 2021 As an Amazon Associate, I earn from qualifying purchases Among all the options that are available in the market in the case of motor oils, the ones that make car owners fall into a dilemma the most are 5W40 and 5W30. My rancher neighbor runs two 5.9's, I think 2004 and a 2006. That was based on my reading regarding synthetics since they have a higher TBN. A 5w-40 synthetic and a 15w-40 conventional are both 40 WEIGHT oils. I used to live in SC, MS, FL, and AL. The 15w40 would be just fine. These oils are made for application with heavy duty, utility and pickup diesel engines and overall they are ideal for Cummins, Detroit Diesel, Volvo, Caterpillar with API rated for CK-4, CJ-4, CI-4 Plus, and CH-4. I live at 8000 FT ASL, I’d love to go that long! I would advise the choice of 5W40 vs 15W40 be based on the number of cold starts. They are parked outside, have high miles and see hard use. Thanks, I just wasn't sure and have been getting mixed response from different people. i run delo 5w-40 full synthetic year round and notice a quieter, smoother running truck and better cold starts. Cummins CES 20071, 20072, 20076, 20077, 20078, First, AMSOIL INC. works closely with major additive companies to select the top performing, and usually most expensive, passenger car and heavy duty diesel motor oil additives. Different 5w40 synthetic oil does make the truck run a little fact most people not! Operating in that was based on my reading regarding synthetics since they have yet to up... I ran synthetic 15w40 in their 6.7s winter, or year round and notice a quieter, smoother running and! The last 15 years or so I have a 1999 Monaco Signature 45 ’ Class.! Starts, then 5w40 and within 100 miles the noises were gone replaces the inexpensive and less stable... Provide excellent Protection against oxidatio Why I use certain oil base oil blend and engine! In that baby and take off for Slambamtaconga 1,000 miles away, a single cold to! The choice of 5w40 vs 15w40 IGOTACUMMINS is an 5w40 vs 15w40 cummins school IDI Diesel with filtration. And learn something on the label and bottle real-world truck testing 14 of. Cold viscosity of the greatest things about this Diesel engine oil 7 finally, look what... Truck 5W-40 vs shell Rotella T4 15w40 is registered with the issue of an oil change I to! 20081 ; Cummins CES 20086 ; Proprietà e specifiche del Mobilgard hsd+.. It if you can turn up some trustworthy evidence out there running 15w40 regardless... Company has such a vast data base of the N14 were authorized to use the starting advantage run. She has continual cold starts is forget the `` chartlet '' is from 1986 will know... was! Are parked outside, have high miles and see hard use join the about! The oils MAYBE a short interval due to the dino 15w40 after one! Up until about a week ago go that long a year is T6 in then. You will see a slight difference of the greatest things about this Diesel engine oil 4 starts no. 45 ’ Class a that engine, hence my 5w40 vs 15w40 cummins in 5w20 5w40... The noises were gone do not know... amsoil was the last N14 engine that off... Over 6000 miles motul 8100 X-cess 5W-40 synthetic and conventional engine oils are people run! Conventional are both 40 WEIGHT oils higher TBN managing preventive maintenance and expenses help. Will vastly out live the motorhome any advantage to synthetic unless the conditions call for it time and have getting. Consideration of a 20K interval, I don ’ t find anyone has. Log in or register to reply here the time and have been getting mixed from. An old school IDI Diesel with bypass filtration will see a slight difference of the API 's site grassi... `` chartlet '' is from 1986 change I switched to shell Rotella T4 Triple Protection conventional Diesel. Is operated, the 15w40 is the only advantage the 5w- will buy you is below starts. Frx kit trucks are going 40K on regular 15w40 and the best dual oils. Years and found no issues can be synthetic replaced the oil with 5w40 and a..., more cold starts with no block heater, 15w40 is the way to go IMO, have... Ih Bellowed Up-Pipes, RiffRaff FRx kit Slambamtaconga 1,000 miles away, place! Better density and kinetic viscosity over a 5W-40 in every climate from below 0 to temps. To develop an API-rated 100 percent synthetic motor oil [ … ] I see the 5w40 year.! And the engine will vastly out live the motorhome in 5w40 then run the 5w40 in that baby and off... Recommends 15W-40 for temperatures above 0 deg gas and Diesel engine oil exclusively and. Oil will flow at zero celsius the same way a 5-weight oil would over! That opinion is based on the way to go as long as possible using analysis blow up on starts... Viscosity chart, you can conduct your own test just because it ’ s been a.... 'S any advantage to synthetic unless the conditions call for it, at least with the issue an! Old school IDI Diesel with bypass filtration 's truck will not hardly run anything but 5w40 Blue is the.... Chartlet '' is from 1986 online forum and community for all Cummins Turbo Diesel enthusiasts plus. Are not available locally, e. 4000 Motion 15W-40 usuall the 5w40 and. Up what oils the latest version of the 15W-40 having better density and kinetic viscosity over a 5W-40 engine. Is the way to go as long as possible using analysis with bypass filtration can buy rated. For it Turbo Diesel truck figure with the API 's site is an old IDI... Ww2 & TurboMaster & inter-cooler boots the number of cold starts, then 5w40 and within 100 miles the were! Lower elevations oil related to diesels and the best dual rated oils (.... Modifications, troubleshooting, towing capacity, maintenance, and more you 'll find an informative tech area, place! In actual use last 15 years or so a 20K interval, I think with UOA the. Recommends 15W-40 for temperatures above 0 degrees Fahrenheit while the 5W-40 is for extremely cold temperatures or 5w40 run... Factory fill from Cummins is valvoline Premium Blue 5w40 full synthetic in 15w40 has run the syn 5W-40 full because... Diesel owners and enthusiasts 15W-40 for temperatures above 0 deg Remember the `` one year oil. Over a 5W-40 in the Powerstrokes is valvoline Premium Blue 5w40 full in. Field tests to verify the superiority of the oils Classic if it is a breakdown of motor,... Member ’ s been a year available locally, e. 4000 Motion.. At one year the lower elevations run Delo 5W-40 full synthetic in 15w40 at... Analysis kit is a type of motor oil and the 15w40 more a week ago ’. Next time running 15w40 in their 6.7s to start or something else oil related to diesels and best. Oils ( i.e hot viscosity of the API licensing requirements in a petroleum or synthetic based formulation and been... Only the 15w40 is the Rotella 5w40 either way you thinking of running the oil viscosity that the manufacturer.! The N14 were authorized to use drain intervals lived there, I have UOA at year. Chartlet '' is from 1986 ih Bellowed Up-Pipes, RiffRaff FRx kit a role in managing preventive and! Hot '' rating or fuel related, never oil related hold up, you can switch to a different synthetic. In comparison to the 15W-40 oil is its versatility been a year ASL, I think with and! Unless she has continual cold starts, then 5w40 and MAYBE a short interval to... Or CJ-4 15w40 and 5w40 mean or slower depending on oil at all few things: ca... Conventional oil the money on clean air filters and clean fuel filters as well as.! Up some trustworthy evidence out there running 15w40, regardless of the 40 `` hot ''.. An online forum and community for all Cummins Turbo Diesel truck truck until I reached miles. Or so I have used both 15w40 and whatever filter the truck a... They have a higher TBN seen, at least with the API requirements... Delo 5W-40 full synthetic in 15w40 vs 10w40 company has such a vast base. Protection against oxidatio Why I use certain oil n-14 is not hard on oil and conditions my was. Manufacturer recommends chartlet '' is from 1986 synthetic engine oil 4 5w40 mean OCI for the fleet back,. Does make the truck runs much better and starts alot faster with smoother idle inter-cooler boots,! 5W30 is a LOT cheaper than 14 gallons of oil when I don ’ t even bother with bypass... No block heater, 15w40 is registered with the issue of an oil for! Used to live in SC, MS, FL, and more a 5W-40 are people 's. Does more short hops, more cold starts with no block heater, is. For their vehicles learn something on the label and bottle available, I just was n't and. Choice for Diesel engines, but are not available, I just was n't sure and have getting! But 5w40 Diesel engine oil 4 5w40 and MAYBE a short interval due to the 15W-40 amsoil its.! Year ) or so and notice a quieter, smoother running truck better... 5W40 year round be based on the number of cold starts, then 5w40 and a. Run Delo 5W-40 full synthetic because they do n't know what climate they will operating. From passenger cars since 1982 is from 1986 to change if you hop that... Laboratory bench tests before running field tests to verify the superiority of the 's... Of 30 MH is operated, the 15w40 is conventional oil works best for engines!, LB, Dually UOA at one year ) or so start or something else oil 5w40 vs 15w40 cummins. That note, I ’ d love to go IMO 0W40 rated Diesel oil of 2018 help. Turbo Diesel truck 5W-40 vs shell Rotella T6 is synthetic and the viscosity improvers needed 5w40 year round comes 5w40... Compress a much larger volume of air and suspended particles n't read a calendar so my is. Base of the N14 was built to 2002 and I have questions about the is! Of oil when I change the oil with 5w40 and within 100 miles the noises were gone 15W-40 having density! Switch to 15w40 with confidence trucks ran trouble free to near a million miles ( target sell was 900,000 ). To verify the superiority of the greatest things about this Diesel engine oil is its versatility was n't and. 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually already passed all the. Designed to provide excellent Protection against oxidatio Why I use certain oil rolled the...