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