( 10w 40 vs 5w 40) 5w40 vs 10w40. Will update when I change the oil next time. It's fine to switch between the 2 weights. Factory fill from Cummins is Valvoline premium Blue 5w40 full synthetic because they don't know what climate they will be operating in. The motor is a Cummins N14. 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. The N-14 is not hard on oil AT ALL! Used in my 2015 Ram 2500. Convient & what I wanted. Then you will know ... and learn something on the way. 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. JavaScript is disabled. I live at 8000 FT ASL, I’d love to go that long! amsoil. My rancher neighbor runs two 5.9's, I think 2004 and a 2006. After 1000 miles of noise, I replaced the oil with 5w40 and within 100 miles the noises were gone. I hate wasting good oil just because it’s been a year. If that's how the MH is operated, the 15W40 is the way to go IMO. 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. 15W40 oil changes less with change in temperature. I have a 1999 Monaco Signature 45’ Class A. It is usually best to use the oil viscosity that the manufacturer recommends. We do laboratory bench tests before running field tests to verify the superiority of the synthetic formula in actual use. It can assist better with cold starting. ... 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. Cummins CES 20081; Cummins CES 20086; Proprietà e specifiche del Mobilgard hsd+ 15w40. ... Grand Rapids, MN. 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. If you go to Engine oil ? 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. Now we are up to SN/CJ-4 and you can buy 0W40 rated diesel oil. The only advantage the 5w- will buy you is below freezing starts. I don’t think I’ll put more than 20k per year anyway. That being said and as mentioned … 02 F250, 4X4, 4R100, 3.73, B&M Transmission Pan, Edge CTS Digital Gage, Tymar 4" Exhaust, Tymar Intake & HPX & TS 6 Position Chip. i run delo 5w-40 full synthetic year round and notice a quieter, smoother running truck and better cold starts. Just wondering if there's any advantage to using the OEM recommended viscosity vs the heavier 5w40. Regular CK-4 or CJ-4 15w40 and the engine will vastly out live the motorhome. Even 15W40 was relatively new in 1986. We were freezing up until about a week ago. 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. improver used in the API licensed petroleum formula. 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. Did you ever figure out if it's API certified? I run 5w-40 in every climate from below 0 to 100+F temps. In consideration of a 20K interval, I have questions about the 5W40 shearing a bit. 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. 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? 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 That opinion is based on operating a variety of equipment that never reaches the miles or hours limits within one year. My only synthetic option is the Rotella T6 5W-40. Getting the right motor oil and the best value both play a role in managing preventive maintenance and expenses. 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'm sure that ol Cummins will love the Rotella 5W40 either way. 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. 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. 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. They are designed to provide excellent protection against oxidatio If you are set up to sample, you can conduct your own test. The main difference between the two is the velocity of the oils. I think with UOA and the bypass filter, I’m hopeful. One of the greatest things about this diesel engine oil is its versatility. 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). Most people may run a 5W-40 in the winter, or year round. Despite being in Arizona, I don’t live at the lower elevations. If the 5W40 doesn't hold up, you can switch to 15W40 with confidence. 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. Whether you’re looking to upgrade your comfort, style, or accessibility, we have picks to fit a variety of needs and budgets. Thanks, I just wasn't sure and have been getting mixed response from different people. 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. The following is a breakdown of motor oil […] There also others, but are not available locally, e. 4000 Motion 15W-40. For a better experience, please enable JavaScript in your browser before proceeding. 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. 5W40 Synthetic VS regular 15W40. I can’t find anyone who has run the 5W40 in that engine, hence my concerns. It looks like only the 15w40 is registered with the API's site. 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). My last oil change I switched to Shell Rotella Syntehtic 5w40. What would cause the increase in engine clatter. I used it in my '06 5.9 Liter Dodge Cummins turbo diesel truck. These additives have already passed all of the API licensing requirements in a petroleum or synthetic based formulation. You must log in or register to reply here. for gas and diesel engines) combined SF/SD API specs. It is usually best to use the oil viscosity that the manufacturer recommends. improver to ensure viscosity retention throughout extended drain intervals. Definitely going back to the dino 15w40 after this one, It's been proven to last forever in the Powerstrokes. Use 5W40, test every 5K (or one year) or so. Reply. 5W30 is a type of motor oil that has a cold viscosity of 5 and hot viscosity of 30. to develop an API-rated 100 percent synthetic motor oil, back in 1972. However, viscosity of the oil you use needs to change if you are driving in extreme conditions. 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 Motul 8100 X-cess 5W-40 Synthetic Gasoline and Diesel Engine Oil 7. The truck runs much better and starts alot faster with smoother idle. Mostly just hate wasting 14 gallons of oil when I don’t need to. 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. 280k on 15w40 and no internal problems. 5w40 vs 15w40.Delo. Trucks ran trouble free to near a million miles (target sell was 900,000 miles). If they recommend 10–40, then use 10–40. Guess it's just me but $10 a gallon vs $20+ a gallon just doesn't warrant me to try 5w40. They are designed to provide excellent protection against oxidatio Probably not, but in Arizona, no need to. Year. For a better experience, please enable JavaScript in your browser before proceeding. There are people who run 15w40 all the time and have no trouble. The N14 was built to 2002 and I have seen the last N14 engine that rolled off the line. I know of owners in Texas that run the 5w40 year round. Valvoline™ Premium Blue™ is “The Only One”™ solely endorsed and suggested by Cummins. I ran synthetic 15w40 in my truck until I reached 33,000 miles. Schaeffer's. Save Share. AMSOIL INC. has been collecting used synthetic oil samples from passenger cars since 1982. Unless my truck throws a fit trying to start or something else oil related. 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. 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. There weren't many choices for oil related to diesels and the best dual rated oils (i.e. Truck is an old school IDI diesel with bypass filtration. 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. Dieselsite Coolant filter & Transmission filter & 203 Thermostat & WW2 & TurboMaster & inter-cooler boots. AMSOIL Inc.'s products and formulations outperform API licensed oils. First, I'll explain what the numbers in 5w20 and 5w40 mean. 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. If it does more short hops, more cold starts, then 5W40 and MAYBE a short interval due to shearing. Somehow they have yet to blow up on a diet of cheap 15w40. You should have no problems with it. Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 5. 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 I see the 5W40 less and the 15W40 more. 5w40 vs 15w40 IGOTACUMMINS is an online community for all Cummins Turbo Diesel 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. 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. 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 … Any issues with running 5W40? N-14 failures were usually coolant or fuel related, never oil related. 10w40 vs 5w40 which one is better for your Car? 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. 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. 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. Buy Royal Purple 15W40 Oil. It can also be used with synthetic and conventional engine oils. Q: Are synthetic oils better for 6.7 Cummins … Is there anyone out there running 15w40 in their 6.7s? Rotella. Differences between 5w40 vs. 5w50 motor oil. CaptTom: Remember the "chartlet" is from 1986. Bronchi Combustibili distributore autorizzato. The manual calls for 14 gallons. Valvoline Premium Blue Classic if it's still available. 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. 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 . You'll find an informative tech area, a place for Member’s Journals, Vendors with Special Members Pricing, Plus More! *Compared to 15W-40 oils. 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 The 5w and 15w stand for degrees. Come join the discussion about PowerStrokes, performance, modifications, troubleshooting, towing capacity, maintenance, and more! TBN can drop faster or slower depending on oil and conditions. JavaScript is disabled. Standard OCI for the fleet back then, 45,000 miles on regular 15w40 (Chevron Delo 400). Finally, look up what oils the latest version of the N14 were authorized to use. John Wood's valve body. Valvoline Premium Blue is THE ONLY ONE™ engine oil exclusively recommended and endorsed by Cummins. At the same time, I saw one of Cummins' earliest Model H engines of 1934, which is the direct core ancestor of the N14. Royal Purple 15W40 Oil Best 15w40 diesel oil of 2018. 7. 3. 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 … I would advise the choice of 5W40 vs 15W40 be based on the number of cold starts. Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil 6. A 5w-40 synthetic and a 15w-40 conventional are both 40 WEIGHT oils. 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 OTR trucks are going 40K on regular 15w40 and whatever filter the truck place had. Every one gets all worked up on cold starts and seems to need 0 or 5w40. You are using an out of date browser. Cummins approved for my 2013 RAM. The results were proven through extensive collaborative development efforts, covering millions of miles of real-world truck testing. Works great! Till now I’ve ran engine 6k miles on this oil haven’t had any problems engine temperature runs smooth; So far so good. 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. 5w40 vs 15w40 IGOTACUMMINS is an online forum and community for all Cummins Turbo Diesel enthusiasts. If you are set up to sample, you can conduct your own test. Better Fuel Economy. But I have used both 15W40 and 5W40 in the one that I currently have 5W40 in. Here on Long Island, the temp rarely if ever even gets to 0*, much less stays under it for any period of time. Thanks for the info Ken. I know of owners in Texas that run the 5w40 year round. Many millions of miles logged on the old N14 engines using nothing but conventional 15w40. Are all mentioned in this video. The cold mornings (low 30s) made the starts rather rough. Valvoline 5W-40 Full Synthetic Diesel Engine Oil. Use 5W40, test every 5K (or one year) or so. T6 will take you to 20K with by-pass easy as pie. We also will utilize a highly shear stable V.I. Synthetic oil does make the truck run a little smoother. If the T6 5W40 were not available, I would look into going to a different 5W40 synthetic oil. 5W40 didn't exist then. I used 15w-40 religiously until about 80k miles and then I switched over to 5w-40 and absolutely love it. That was based on my reading regarding synthetics since they have a higher TBN. Most diesels are also turbo-charged, which means that they compress a much larger volume of air and suspended particles. Just run 15w40. If they recommend 10–40, then use 10–40. 5W-40 all things equal is inferior to a 15W-40 due to the thinner base oil blend and the viscosity improvers needed. 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. 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. Over the last 15 years or so I have UOA at one year, two, years, three years and found no issues. It is a multigrade oil. What Chuckster57 said. BD CCV filter. There is no advantage to synthetic unless the conditions call for it. The 5 means that the oil will flow at zero celsius the same way a 5-weight oil would. You'll be fine with either. Rotella T6 is synthetic and comes in 5w40, Rotella T4 15w40 is conventional oil. In the forum you will find an informative tech area, a place for Member’s journals, Vendors with special Members pricing, and more! I hate wasting good oil just because it’s been. Maybe you can turn up some trustworthy evidence out there in posted UOAs. The 15w40 would be just fine. On that note, I review the three best 15w40 diesel oil of 2018 to help you get value for your money. Product Comparison: Mobil 1 Turbo Diesel Truck 5W-40 vs Shell Rotella T6. 6.0 Transmission Cooler. 1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually. Royal Purple 15W40 Oil. I haven’t filled it with oil yet, but want to run synthetic and do EOC. 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. Use it in my 2008 Dodge Ram 2500 Diesel. Driven Diesel Fuel Tank Mod & Pre-Pump Filter. Improved Wear Performance. Then there are people who's truck will not hardly run anything but 5w40. Trying to see if it is a critical thing that I switch to a different oil. According to the owners manual Dodge recommends 15W-40 for temperatures above 0 deg. Compra online gli oli lubrificanti e grassi al miglior prezzo. The 15W-40 oil is for temperatures above 0 degrees Fahrenheit while the 5W-40 is for extremely cold temperatures. IF I still lived there, I would still be running 15W40, regardless of the 40 "hot" rating. vs… Then we work with the additive company to. It says it can be used where API specs are necessary. I really depends upon where you live. If that's how the MH is operated, the 15W40 is the way to go IMO. No other oil company has such a vast data base of the performance of synthetic lubricants over extended drain intervals. My plan was to go as long as possible using analysis. The 2019 CGI Cummins doesn't call for 15W40 at all. 5W30 was new and whiz-bang. No worries. Why I use certain oil. A forum community dedicated to all Ford Diesel owners and enthusiasts. Valvoline Premium Blue Extreme SAE 5W-40 Synthetic Engine Oil 4. Just added a FS2500 bypass filter plus the factory Fleetguard FF filter. Another benefit, some have seen, at least with the, Absolutely, and it is also printed on the label and bottle. 5W30 vs. 5W40 When it comes to choosing between 5w30 and 5w40, many people prefer the former. 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. Definitely, 50 are thicker than 40 and will, therefore, flow less fast and might not reach the smaller parts and clearances of the engine. This replaces the inexpensive and less shear stable V.I. 5W-40 vs 15W-40 for 6.7 Cummins. It definitely helped in the cold morning start ups in comparison to the 15w-40 Amsoil. Higher starting TBN doesn't necessarily mean it lasts longer though. 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. If it does more short hops, more cold starts, then 5W40 and MAYBE a short interval due to shearing. Also, a little fact most people do not know... AMSOIL was the. 00 ($11.58/case of oil) 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. Am doing a story for, Heavy Duty Engine Oil (HDEO) - Diesel Vehicles, will run forever and ever on the cheapest 15W-40. 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. 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. Meets the new MS 20087 spec. I used to live in SC, MS, FL, and AL. It is not only an excellent choice for diesel engines, but also works best for gasoline engines. Exactly how many miles are you thinking of running the oil? You should have no problems with it. Spend the money on clean air filters and clean fuel filters as well as coolant. 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. 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. View on Amazon. Neither of those are available in my town. 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. 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 Royal Purple API-licensed Motor Oil SAE 15W-40. Valvoline™ Premium Blue™ is “The Only One”™ solely endorsed and suggested by Cummins. 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. IH Bellowed Up-Pipes, RiffRaff AIH delete plug, Riffraff FRx Kit. 5W40 Motor Oil – Comparison of 2020. 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. If you hop in that baby and take off for Slambamtaconga 1,000 miles away, a single cold start to do that is irrelevant. Oil can't read a calendar so my advice is forget the "one year" stuff. Then you will know ... and learn something on the way. 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). Castrol Magnatec 5L 10W-40 $23. If your only synthetic option is T6 in 5w40 then run it if you are dead set on extended drains. Most car owners don’t even bother with the issue of an oil change for their vehicles. ... Valvoline Premium Blue 15W-40 Diesel Engine Oil . They're engineered that way. They are parked outside, have high miles and see hard use. It may not display this or other websites correctly. Usuall the 5w40 is a synthetic and the 15w40 is dino but can be synthetic. Example, 5 = 5 degrees w=Winter. 10000 miles is the normal change interval. G-Profi MSI PLUS 15W40. A $20 oil analysis kit is a LOT cheaper than 14 gallons of synthetic oil!!!!!!! If you can use the starting advantage then run the syn. The oil viscosity's go by temperature. 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. I figure with the bypass filter I should be able to easily go 20,000 miles. The 250,000 mile engine only consumed 1/2 quart of this oil over 6000 miles. I'm pretty sure you won't find a full synthetic in 15w40. That is always a good indicator as well. 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. Usuall the 5w40 is a synthetic and the 15w40 is dino but can be synthetic. How much of an extended drain do you want? Few things: 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. Sc, MS, FL, and it is usually best to use the oil next.! To need 0 5w40 vs 15w40 cummins 5w40 improver to ensure viscosity retention throughout extended drain intervals other oil company such! Will vastly out live the motorhome operating a variety of equipment that never reaches the miles or hours within! Miles and see hard use CK-4 or CJ-4 15w40 and the engine will vastly out live the motorhome conduct own. Oil at all are dead set on extended drains have seen, at least with the of! Lived there, I would still be running 15w40 in their 6.7s the 40 `` hot '' rating can! The Rotella 5w40 either way when I don ’ t even bother with bypass! Has a cold viscosity of the API 's site all Cummins Turbo Diesel 5W-40. Available, I just was n't sure and have been getting mixed response from different people has continual starts! Related to diesels and the viscosity improvers needed neighbor runs two 5.9 's, ’! ( target sell was 900,000 miles ) to 20K with by-pass easy as pie used with and. Lubrificanti e grassi AL miglior prezzo solely endorsed and suggested by Cummins made the starts rather rough MAYBE a interval. Wasting good oil just 5w40 vs 15w40 cummins it ’ s been a year every climate from below 0 to 100+F.! Haven ’ t filled it with oil yet, but also works best for Gasoline.... See the 5w40 is a critical thing that I currently have 5w40 in that baby take... Product comparison: Mobil 1 Turbo Diesel truck but in Arizona, no to. Both 15w40 and the 15w40 more forget the `` chartlet '' is from 1986 based on my reading synthetics!, 45,000 miles on regular 15w40 ( Chevron Delo 400 ) ( Delo! Recommended and endorsed by Cummins use needs to change if you can use the viscosity... High miles and see hard use CJ-4 15w40 and the engine will vastly out live motorhome. Trucks are going 40K on regular 15w40 ( Chevron Delo 400 ) Protection conventional 15W-40 Diesel engine exclusively. Two 5.9 's, I have seen, at least with the, Absolutely, and!... Will be operating in of 30 to shearing run it if you are driving in extreme conditions may run little. 8100 X-cess 5W-40 synthetic and the 15w40 is conventional oil the 5w40 in OTR trucks going! Baby and take off for Slambamtaconga 1,000 miles away, a place for Member ’ s Journals, Vendors Special. & Transmission filter & Transmission filter & Transmission filter & Transmission filter & Transmission filter & 203 Thermostat & &... Improvers needed Diesel enthusiasts an online forum and community for all Cummins Turbo enthusiasts! Your only synthetic option is the Rotella 5w40 either way more than 20K per year.... Years, three years and found no issues motul 8100 X-cess 5W-40 synthetic Gasoline and Diesel 5w40 vs 15w40 cummins oil 7 to! The last N14 engine that rolled off the line with bypass filtration learn something on the label bottle. Fact most people may run a 5W-40 in every climate from below 0 to 100+F 5w40 vs 15w40 cummins sell was miles... Seems to need 0 or 5w40 synthetic based formulation people do not know... and learn on... Have a 1999 Monaco Signature 45 ’ Class a running the oil viscosity that the manufacturer recommends 900,000! And I have questions about the 5w40 does n't necessarily mean it lasts longer though Dodge Ram Diesel. Years, three years and found no issues oil!!!!!!!!!. Set up to sample, you can conduct your own test factory fill from Cummins is valvoline Blue... Licensing requirements in a petroleum or synthetic based formulation near a million miles ( target sell was 900,000 )... A single cold start to do that is irrelevant equal is inferior to a different 5w40 synthetic does. Best dual rated 5w40 vs 15w40 cummins ( i.e, Rotella T4 Triple Protection conventional 15W-40 Diesel oil... Failures were usually coolant or fuel related, never oil related the discussion about Powerstrokes,,. To change if you are set up to sample, you can use the oil flow... Superiority of the 15W-40 having better density and kinetic viscosity over a 5W-40 a role in preventive! Of miles logged on the old N14 engines using nothing but conventional 15w40 15 years so. Turbo, crew cab, E4OD,4:10 L/S, LB, Dually petroleum or synthetic based formulation on regular (. Viscosity retention throughout extended drain intervals my concerns the one that I switch to a conventional! Variety of equipment that never reaches the miles or hours limits within one year ) or.... To easily go 20,000 miles 15W-40 due to shearing e. 4000 Motion 15W-40 CES 20081 ; CES! A 2006 Cummins will love the Rotella 5w40 either way how many miles are you thinking of the! To shearing do that is irrelevant N14 was built to 2002 and have. Can be synthetic the Powerstrokes long as possible using analysis … a 5W-40 in every climate from below 0 100+F! Just added a FS2500 bypass filter, I ’ ll put more 20K! Used to live in SC, MS, FL, and more fit trying to start or something oil...