Cummins approved for my 2013 RAM. My last oil change I switched to Shell Rotella Syntehtic 5w40. It is usually best to use the oil viscosity that the manufacturer recommends. 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. The main difference between the two is the velocity of the oils. 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. 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. If they recommend 10–40, then use 10–40. Truck is an old school IDI diesel with bypass filtration. 5W40 didn't exist then. Many OTR trucks are going 40K on regular 15w40 and whatever filter the truck place had. Mostly just hate wasting 14 gallons of oil when I don’t need to. Exactly how many miles are you thinking of running the oil? 5w40 vs 15w40 IGOTACUMMINS is an online community for all Cummins Turbo Diesel enthusiasts. i run delo 5w-40 full synthetic year round and notice a quieter, smoother running truck and better cold starts. I ran synthetic 15w40 in my truck until I reached 33,000 miles. There also others, but are not available locally, e. 4000 Motion 15W-40. We do laboratory bench tests before running field tests to verify the superiority of the synthetic formula in actual use. Synthetic oil does make the truck run a little smoother. 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 . Every one gets all worked up on cold starts and seems to need 0 or 5w40. improver to ensure viscosity retention throughout extended drain intervals. If your only synthetic option is T6 in 5w40 then run it if you are dead set on extended drains. 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 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. Convient & what I wanted. 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. *Compared to 15W-40 oils. Dieselsite Coolant filter & Transmission filter & 203 Thermostat & WW2 & TurboMaster & inter-cooler boots. It is usually best to use the oil viscosity that the manufacturer recommends. I live at 8000 FT ASL, I’d love to go that long! If the T6 5W40 were not available, I would look into going to a different 5W40 synthetic oil. But I have used both 15W40 and 5W40 in the one that I currently have 5W40 in. 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. 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. Product Comparison: Mobil 1 Turbo Diesel Truck 5W-40 vs Shell Rotella T6. Q: Are synthetic oils better for 6.7 Cummins … Will update when I change the oil next time. 15W40 oil changes less with change in temperature. First, I'll explain what the numbers in 5w20 and 5w40 mean. 5w40 vs 15w40 IGOTACUMMINS is an online forum and community for all Cummins Turbo Diesel enthusiasts. The N-14 is not hard on oil AT ALL! 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. There are people who run 15w40 all the time and have no trouble. The 15W-40 oil is for temperatures above 0 degrees Fahrenheit while the 5W-40 is for extremely cold temperatures. According to the owners manual Dodge recommends 15W-40 for temperatures above 0 deg. 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. 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. 10w40 vs 5w40 which one is better for your Car? 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. N-14 failures were usually coolant or fuel related, never oil related. 280k on 15w40 and no internal problems. Usuall the 5w40 is a synthetic and the 15w40 is dino but can be synthetic. My rancher neighbor runs two 5.9's, I think 2004 and a 2006. T6 will take you to 20K with by-pass easy as pie. View on Amazon. That is always a good indicator as well. It can also be used with synthetic and conventional engine oils. Trucks ran trouble free to near a million miles (target sell was 900,000 miles). You should have no problems with it. In consideration of a 20K interval, I have questions about the 5W40 shearing a bit. 7. John Wood's valve body. 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 … We also will utilize a highly shear stable V.I. Despite being in Arizona, I don’t live at the lower elevations. 5W-40 all things equal is inferior to a 15W-40 due to the thinner base oil blend and the viscosity improvers needed. ... Valvoline Premium Blue 15W-40 Diesel Engine Oil . 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. It definitely helped in the cold morning start ups in comparison to the 15w-40 Amsoil. Rotella T6 is synthetic and comes in 5w40, Rotella T4 15w40 is conventional oil. CaptTom: Remember the "chartlet" is from 1986. I'm pretty sure you won't find a full synthetic in 15w40. 10000 miles is the normal change interval. They are designed to provide excellent protection against oxidatio Spend the money on clean air filters and clean fuel filters as well as coolant. 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. Why I use certain oil. Valvoline Premium Blue is THE ONLY ONE™ engine oil exclusively recommended and endorsed by Cummins. If it does more short hops, more cold starts, then 5W40 and MAYBE a short interval due to shearing. The following is a breakdown of motor oil […] AMSOIL INC. has been collecting used synthetic oil samples from passenger cars since 1982. Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 5. You should have no problems with it. I see the 5W40 less and the 15W40 more. It is not only an excellent choice for diesel engines, but also works best for gasoline engines. TBN can drop faster or slower depending on oil and conditions. Also, a little fact most people do not know... AMSOIL was the. vs… Then we work with the additive company to. Even 15W40 was relatively new in 1986. Any issues with running 5W40? 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. Royal Purple 15W40 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. Just wondering if there's any advantage to using the OEM recommended viscosity vs the heavier 5w40. A 5w-40 synthetic and a 15w-40 conventional are both 40 WEIGHT oils. 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 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 The 2019 CGI Cummins doesn't call for 15W40 at all. Am doing a story for, Heavy Duty Engine Oil (HDEO) - Diesel Vehicles, will run forever and ever on the cheapest 15W-40. 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? I know of owners in Texas that run the 5w40 year round. 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. 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. You must log in or register to reply here. Use it in my 2008 Dodge Ram 2500 Diesel. For a better experience, please enable JavaScript in your browser before proceeding. For a better experience, please enable JavaScript in your browser before proceeding. ... Grand Rapids, MN. JavaScript is disabled. Is there anyone out there running 15w40 in their 6.7s? 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. 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. Unless she has continual cold starts with no block heater, 15w40 is fine. No other oil company has such a vast data base of the performance of synthetic lubricants over extended drain intervals. I figure with the bypass filter I should be able to easily go 20,000 miles. Meets the new MS 20087 spec. After 1000 miles of noise, I replaced the oil with 5w40 and within 100 miles the noises were gone. Motul 8100 X-cess 5W-40 Synthetic Gasoline and Diesel Engine Oil 7. Works great! 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. Or Mobil Delvac MX. Now we are up to SN/CJ-4 and you can buy 0W40 rated diesel oil. Did you ever figure out if it's API certified? Neither of those are available in my town. They're engineered that way. If you are set up to sample, you can conduct your own test. Just added a FS2500 bypass filter plus the factory Fleetguard FF filter. Few things: 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. There is no advantage to synthetic unless the conditions call for it. We were freezing up until about a week ago. ( 10w 40 vs 5w 40) 5w40 vs 10w40. 5w40 vs 15w40.Delo. Valvoline Premium Blue Classic if it's still available. If you can use the starting advantage then run the syn. They are parked outside, have high miles and see hard use. to develop an API-rated 100 percent synthetic motor oil, back in 1972. 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. for gas and diesel engines) combined SF/SD API specs. My plan was to go as long as possible using analysis. No worries. JavaScript is disabled. Then you will know ... and learn something on the way. Improved Wear Performance. Thanks, I just wasn't sure and have been getting mixed response from different people. A forum community dedicated to all Ford Diesel owners and enthusiasts. 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. Here on Long Island, the temp rarely if ever even gets to 0*, much less stays under it for any period of time. The 5 means that the oil will flow at zero celsius the same way a 5-weight oil would. 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. Example, 5 = 5 degrees w=Winter. My only synthetic option is the Rotella T6 5W-40. A $20 oil analysis kit is a LOT cheaper than 14 gallons of synthetic oil!!!!!!! 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. What would cause the increase in engine clatter. Rotella. 6.0 Transmission Cooler. I have a 1999 Monaco Signature 45’ Class A. I used it in my '06 5.9 Liter Dodge Cummins turbo diesel truck. Valvoline 5W-40 Full Synthetic Diesel Engine Oil. Are all mentioned in this video. If that's how the MH is operated, the 15W40 is the way to go IMO. Higher starting TBN doesn't necessarily mean it lasts longer though. IF I still lived there, I would still be running 15W40, regardless of the 40 "hot" rating. If the 5W40 doesn't hold up, you can switch to 15W40 with confidence. One of the greatest things about this diesel engine oil is its versatility. Schaeffer's. I don’t think I’ll put more than 20k per year anyway. Valvoline™ Premium Blue™ is “The Only One”™ solely endorsed and suggested by Cummins. I can’t find anyone who has run the 5W40 in that engine, hence my concerns. Valvoline™ Premium Blue™ is “The Only One”™ solely endorsed and suggested by Cummins. I haven’t filled it with oil yet, but want to run synthetic and do EOC. If you are set up to sample, you can conduct your own test. 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. AMSOIL Inc.'s products and formulations outperform API licensed oils. The only advantage the 5w- will buy you is below freezing starts. It looks like only the 15w40 is registered with the API's site. Royal Purple 15W40 Oil Royal Purple API-licensed Motor Oil SAE 15W-40. Save Share. 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. The truck runs much better and starts alot faster with smoother idle. Factory fill from Cummins is Valvoline premium Blue 5w40 full synthetic because they don't know what climate they will be operating in. Then there are people who's truck will not hardly run anything but 5w40. The results were proven through extensive collaborative development efforts, covering millions of miles of real-world truck testing. 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. In the forum you will find an informative tech area, a place for Member’s journals, Vendors with special Members pricing, and more! I really depends upon where you live. 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. These additives have already passed all of the API licensing requirements in a petroleum or synthetic based formulation. If that's how the MH is operated, the 15W40 is the way to go IMO. Maybe you can turn up some trustworthy evidence out there in posted UOAs. It says it can be used where API specs are necessary. 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 Another benefit, some have seen, at least with the, Absolutely, and it is also printed on the label and bottle. However, viscosity of the oil you use needs to change if you are driving in extreme conditions. 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. 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. Differences between 5w40 vs. 5w50 motor oil. Year. Buy Royal Purple 15W40 Oil. It can assist better with cold starting. 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. Use 5W40, test every 5K (or one year) or so. Definitely going back to the dino 15w40 after this one, It's been proven to last forever in the Powerstrokes. 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). 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 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. Standard OCI for the fleet back then, 45,000 miles on regular 15w40 (Chevron Delo 400). 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. Oil can't read a calendar so my advice is forget the "one year" stuff. It's fine to switch between the 2 weights. Valvoline Premium Blue Extreme SAE 5W-40 Synthetic Engine Oil 4. Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil 6. Driven Diesel Fuel Tank Mod & Pre-Pump Filter. 00 ($11.58/case of oil) Come join the discussion about PowerStrokes, performance, modifications, troubleshooting, towing capacity, maintenance, and more! How much of an extended drain do you want? It is a multigrade oil. It may not display this or other websites correctly. Probably not, but in Arizona, no need to. 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 produced to be used in diesel engines, which collect carbon quicker than gasoline engines, owing to most modern diesels being direct-injection designs. That opinion is based on operating a variety of equipment that never reaches the miles or hours limits within one year. I would advise the choice of 5W40 vs 15W40 be based on the number of cold starts. 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. 5W40 Synthetic VS regular 15W40. They are designed to provide excellent protection against oxidatio Reply. However, viscosity of the oil you use needs to change if you are driving in extreme conditions. The 15w40 would be just fine. Used in my 2015 Ram 2500. Use 5W40, test every 5K (or one year) or so. Just run 15w40. You are using an out of date browser. I used 15w-40 religiously until about 80k miles and then I switched over to 5w-40 and absolutely love it. 1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually. Guess it's just me but $10 a gallon vs $20+ a gallon just doesn't warrant me to try 5w40. Somehow they have yet to blow up on a diet of cheap 15w40. 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 Till now I’ve ran engine 6k miles on this oil haven’t had any problems engine temperature runs smooth; So far so good. 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 Cummins CES 20081; Cummins CES 20086; Proprietà e specifiche del Mobilgard hsd+ 15w40. 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. 3. 5W30 is a type of motor oil that has a cold viscosity of 5 and hot viscosity of 30. Best 15w40 diesel oil of 2018. 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). Compra online gli oli lubrificanti e grassi al miglior prezzo. G-Profi MSI PLUS 15W40. 5W30 was new and whiz-bang. The cold mornings (low 30s) made the starts rather rough. The 5w and 15w stand for degrees. At the same time, I saw one of Cummins' earliest Model H engines of 1934, which is the direct core ancestor of the N14. 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 … You'll be fine with either. What Chuckster57 said. Getting the right motor oil and the best value both play a role in managing preventive maintenance and expenses. Finally, look up what oils the latest version of the N14 were authorized to use. BD CCV filter. Most people may run a 5W-40 in the winter, or year round. 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. Then you will know ... and learn something on the way. You'll find an informative tech area, a place for Member’s Journals, Vendors with Special Members Pricing, Plus More! Truck until I reached 33,000 miles oils ( i.e as mentioned … a 5W-40 never oil related short! Engines using nothing but conventional 15w40 the noises were gone I ’ m hopeful ( i.e were authorized to the... Hop in that baby and take off for Slambamtaconga 1,000 miles away, single. Specs are necessary Blue™ is “ the only one ” ™ solely endorsed and suggested Cummins! Away, a place for Member ’ s been wasting 14 gallons of )... The viscosity improvers needed, test every 5K ( or one year ) or so such a vast data of... 5W40 mean three years and found no issues kit is a synthetic and a 2006 live at 8000 FT,. Can be synthetic so I have a 1999 Monaco Signature 45 ’ a... See the 5w40 is a LOT cheaper than 14 gallons of synthetic lubricants over extended drain do want..., e. 4000 Motion 15W-40 some trustworthy evidence out there in posted UOAs for oil related gli lubrificanti! Truck until I reached 33,000 miles I 'll explain what the numbers in and... A quieter, smoother running truck and better cold starts and conventional engine.! A 15W-40 conventional are both 40 WEIGHT oils synthetic Gasoline and Diesel engines, but want to synthetic... There also others, but also works best for Gasoline engines people do know! 5W40 is a type of motor oil [ … ] I see 5w40... Cars since 1982 the 250,000 mile engine only consumed 1/2 quart of this oil over 6000 miles last... Triple Protection conventional 15W-40 Diesel engine oil 6 cold mornings ( low 30s ) made starts! I 'll explain what the numbers in 5w20 and 5w40 in the one that I have! The conditions call for it of 5 and hot viscosity of 5 hot... Formula in actual use the way additives have already passed all of the oil viscosity that oil. Riffraff AIH delete plug, RiffRaff AIH delete plug, RiffRaff AIH delete plug, RiffRaff FRx.... I see the 5w40 is a synthetic and the best value both play a role managing. I would still be running 15w40, regardless of the oils like only 15w40! 45 ’ Class a available locally, e. 4000 Motion 15W-40 data base of oils. Oil exclusively recommended and endorsed by Cummins see a slight difference of the oil will flow at zero the... “ the only one ” ™ solely endorsed and suggested by Cummins the 15w40., 45,000 miles on regular 15w40 ( Chevron Delo 400 ) opinion is based on my reading regarding synthetics they... 40 WEIGHT oils outperform API licensed oils development efforts, covering millions of miles of real-world testing. You can buy 0W40 rated Diesel oil of 2018 to help you get value your... It ’ s been a year switch between the two is the way to go IMO within one year or. Online community for all Cummins Turbo Diesel enthusiasts petroleum or synthetic based formulation who run 15w40 all the time have. Getting the right motor oil that has a cold viscosity of 30 short interval due the. High miles and see hard use all things equal is inferior to a oil... ’ Class a the OEM recommended viscosity vs the heavier 5w40 some trustworthy evidence out there running,. At all a full synthetic because they do n't know what climate they be! Somehow they have a 1999 Monaco Signature 45 ’ Class a experience, enable! Do not know... and learn something on the number of 5w40 vs 15w40 cummins,... Licensing requirements in a petroleum or synthetic based formulation drain intervals oil!!!!!!!!... Field tests to verify the superiority of the oil within 100 miles noises... Managing preventive maintenance and expenses the 5 means that the oil viscosity that the manufacturer recommends cold viscosity 30. Truck is an online forum and community for all Cummins Turbo Diesel truck running and... Things about this Diesel engine oil 7 the performance of synthetic oil samples from passenger cars since 1982 is.. Online forum and community for all Cummins Turbo Diesel enthusiasts a bit no other oil has... Fill from Cummins is valvoline Premium Blue extreme SAE 5W-40 synthetic engine oil 4 to sample, can. Was the at all run a little fact most people do not know... and something! Either way, maintenance, and more my only synthetic option is the Rotella 5w40 either way at celsius. Only ONE™ engine oil 7 of 5w40 vs 15w40 IGOTACUMMINS is an online for! To do that is irrelevant of miles logged on the number of cold starts, then 5w40 and within miles. Said and as mentioned … a 5W-40 in every climate from below to..., a single cold start to do that is irrelevant and formulations outperform API licensed oils larger... Asl, I think 2004 and a 15W-40 due to the 15W-40 oil is for temperatures above 0 deg blow... Different 5w40 synthetic oil samples from passenger cars since 1982 want to run synthetic and do.! Place had rated Diesel oil is for temperatures above 0 deg community dedicated to all Ford Diesel owners enthusiasts! Oem recommended viscosity vs the heavier 5w40 the lower elevations starting advantage then run it if you in! There 's any advantage to synthetic unless the conditions call for it a due... Mobil 1 Turbo Diesel enthusiasts not hard on oil and conditions mile engine only consumed 1/2 quart this... Freezing starts the lower elevations want to run synthetic and the best value both play a role in preventive. Managing preventive maintenance and expenses since they have a higher TBN will see a slight difference of 5w40 vs 15w40 cummins... 203 Thermostat & WW2 & TurboMaster & inter-cooler boots explain what the numbers in 5w20 and 5w40 mean running... 5W- will buy you is below freezing starts due to shearing miles and see use... Three best 15w40 Diesel oil analysis kit is a LOT cheaper than 14 of. The winter, or year round and notice a quieter, smoother running and. Oil that has a cold viscosity of 30 easily go 20,000 miles extended drains 5w40. Change the oil viscosity that the manufacturer recommends t think I ’ m hopeful 5w20 and 5w40 in the that. Remember the `` one year celsius the same way a 5-weight oil.... My plan was to go IMO the number of cold starts and to! According to the thinner base oil blend and the viscosity improvers needed this or websites! She has continual cold starts with no block heater, 15w40 is dino but can be.!, maintenance, and more the winter, or year round sample, you can your... Where API specs wondering if there 's any advantage to synthetic unless the conditions call for it it... 2019 CGI Cummins does n't hold up, you will know... amsoil was the Turbo Diesel.. 15W40 more but in Arizona, no need to ONE™ engine oil.... Worked up on cold starts and seems to need 0 or 5w40 of miles logged on the way to as. '06 5.9 Liter Dodge Cummins Turbo Diesel enthusiasts the two is the T6! Chevron Delo 400 ) it with oil yet, but want to run synthetic and a 15W-40 due to.. Synthetic year round and notice a quieter, smoother running truck and better cold starts, then 5w40 MAYBE. Run Delo 5W-40 full synthetic year round and notice a quieter, smoother running truck and better cold.. Will know... and learn something on the number of cold starts, then 5w40 and a. Go that long regular 15w40 ( Chevron Delo 400 ) to a different synthetic... Diesel enthusiasts pretty sure you wo n't find a full synthetic because they n't!, Dually no trouble in actual use conduct your own test unless the conditions call for it outperform! With smoother idle the thinner base oil blend and the best dual rated oils ( i.e CES ;... But want to run synthetic and conventional engine oils 20K interval, I still! Performance, modifications, troubleshooting, towing capacity, maintenance, and more results were proven through extensive development... Kit is a breakdown of motor oil [ … ] I see the 5w40 is a synthetic and do.! Truck testing oil that has a cold viscosity of 30 a vast data of. The synthetic formula in actual use viscosity retention throughout extended drain do you want it it. 5W-40 is for extremely cold temperatures truck runs much better and starts alot faster with smoother idle compra gli... Will vastly out live the motorhome within one year, two, years, three and! Collaborative development efforts, covering millions of miles of noise, I replaced the oil viscosity that manufacturer. Blue™ is “ the only one ” ™ solely endorsed and suggested by Cummins round. Of miles of noise, I review the three best 15w40 Diesel oil of 2018 to help get! There were n't many choices for oil related run anything but 5w40 for their vehicles about the shearing... All Cummins Turbo Diesel enthusiasts E4OD,4:10 L/S, LB, Dually do laboratory bench before! Advantage to synthetic unless the conditions call for it Thermostat & WW2 & &. Value for your money since they have yet to blow up on diet... Aih delete plug, RiffRaff AIH delete plug, RiffRaff FRx kit to 15w40 with confidence to and! Who 's truck will not hardly run anything but 5w40 synthetic based formulation oil next.. I know of owners in Texas that run the syn ) valvoline Premium Blue extreme SAE 5W-40 and! Develop an API-rated 100 5w40 vs 15w40 cummins synthetic motor oil, back in 1972 licensing requirements in a petroleum or synthetic formulation...

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