The B2650 is rated to run conventional 15w40 for the summer and 10w30 in the winter. While 15W-40 is suggested as the predominant viscosity for your engine, GM does recommend 5W-40 for temps below -18°C (0°F). Difference in comparison to 5W30 would be a lot less, probably 1-2%. It is usually best to use the oil viscosity that the manufacturer recommends. Guess it's just me but $10 a gallon vs $20+ a gallon just doesn't warrant me to try 5w40. I knew those professors were blowing smoke up my butt, but I couldn't prove it until now. 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 I see the 5W40 less and the 15W40 more. On another note, the Duramax runs fine on API approved 15W40 conventional heavy-duty diesel oil. Not sure how quickly the synthetic turns black. I would call it at least 3-4% (0W20 vs 5W40) lower consumption in warm weather, god knows what would happen in winter. The Society of Automotive Engineers (SAE) established the numerical code system which they use to grade the motor oils in accordance with the characteristic of their viscosity. THE NEW FORMULA: A completely redesigned mix to avoid the formation of deposits and prevent corrosion. My last oil change I switched to Shell Rotella Syntehtic 5w40. Överst. *Compared to 15W-40 oils. thanks for the help. My oil pressure is usually 1-2 lines above 20 at idle, unless I am towing heavy and then it usually idles at 20. The manual calls for 15w40. The Synthetic is obviously a little more expensive. 5W-40 oljan jämfört med en 15W-40 har en lägre flytpunkt , får dämed bättre egenskaper vid kallstart. Electricity is cheaper than a spun bearing. Our team of experts narrowed down the best diesel oils on the market. I like it a lot. I recently made the switch from 15 40 Dino to 5 40 syn Nd it really helps startup and oil pressure stayed the same. 2014-06-08 18:30 #2. a128. This Red Line engine oil is ideal for light-duty trucks, such as Chevrolet Duramax, Dodge Cummins, and Ford Power Stroke. High ZDDP extends the life of engines that have high pressure sliding surfaces, which is more common in high compression engines. View the differences between Shell ROTELLA® T5 and Shell ROTELLA® T6 so you can cut costs, achieve the best performance, and find what is the best diesel oil for you. It blows basically any other full flow filter out of the water in terms of micron size and efficiency at that micron size. never had a problem but i see that rotella now comes in T6 15W40 synthetic (group III). If they recommend 10–40, then use 10–40. Mobil 1™ Turbo Diesel Truck 5W-40 is a fully synthetic performance heavy duty diesel engine oil that helps to extend engine life while providing long drain capability and fuel economy for modern diesel engines operating in severe applications. Fino al -15% di sconto Consegna gratuita* 5,95 €-+ Aggiungi al carrello. Rhino bedliner, Unicover bed cover. I don't see any reason to run a 15w40 over a 5w40. Best 15w40 diesel oil of 2018. To ensure maximum durability for your engines, Red Line 21405 diesel oil has that capability. The "40" indicates this is a bit thicker than the average motor oil, which is usually 30 for most cars, and it lubricates the engine more than average while it is hot. This means the anti drain back valve in the filters like Fram may as well not be installed because they don't work. JavaScript is disabled. To be determined by UOA. New Caledonia. Pick a good oil you trust and use good filters. Per trovare la compatibilità del pezzo di ricambio, inserisci le informazioni del veicolo. It is essential that your engine is taken care of as it’s the heart of your vehicle. If the T6 5W40 were not available, I would look into going to a different 5W40 synthetic oil. Truck is 2007 LBZ duramax. 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 When it comes to choosing between 5w30 and 5w40, many people prefer the former. Then there are people who's truck will not hardly run anything but 5w40. However, it rarely gets above the high 70s to low 80s here. Looking about I have seen that 5w40 at 505.01 is the oil to go with but have also read that 15w40 with 505.01 spec is better for engine with high mileage which mine has. Nessun veicolo selezionato. Google the difference in moleculer chain shapes and structure to see why that happens, no fix oil wise just throw in the gasket and keep going. 9.98 13 Pennzoil Long Life 15W40 CI-4 plus CI-4 plus 10.88 14 Chevron Delo 400 15W40 CI-4 plus CI-4 plus 35.00 20 Red Line Diesel Synthetic 15W40 CI-4 plus CI-4 Good 10.36 2 NAPA Universal Fleet Plus 15W40 CI-4 CI-4 25.70 10 Amsoil 5W40 CI-4 CI-4 plus 13.51 15 Caterpillar DEO 15W40 CI-4 CI-4 plus 12.68 16 John Deere Plus-50 15W40 CI-4 CI-4 cheapest junk in a bottle EXCEPT penzoil. Better Fuel Economy. Wondering if any of the collective has used the 5W40 T6 and tried the 15W40 T6 and … Buy synthetic 5W40 DEO and synthetic 15W40 DME with confidance just click on them in the table below to go to pricing. The 5W40 is thinner than the 10W40 at lower temperatures. 5W30 vs 5W40 : Which Oil Should I Choose? Will go to 5w40 this winter. Most car owners take their vehicles to the garage for the oil change. http://www.schaefferoil.com/dealer_locator.html, http://www.schaefferoil.com/datapdf/9000.pdf, 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. 5W30 vs. 5W40. 10w40 vs 5w40 which one is better for your Car? Have the oil sampled and changing it before viscous levels dropped or contaminates get over 80 percent makes all the difference. Better Fuel Economy. On another note, the Duramax runs fine on API approved 15W40 conventional heavy-duty diesel oil. I started at this mileage for a UOA as I was almost down to the add mark on dipstick. Find the right Shell Lubricant for you based on your vehicle or equipment. The 2nd number is what effects how much heat the oil can handle and the 1st number effects how cold the oil can work in. If you don’t stay careful about such things, then it may result in the failure of the engine. The main difference between the two is the velocity of the oils. I also upgraded to a larger Donaldson filter. Improved Wear Performance. 5w40 won't hurt anything, Good oil doesn't have to be expensive, ... opens around 2500-2800 rpm's. … When it comes to choosing between 5w30 and 5w40, many people prefer the former. Then there are people who's truck will not hardly run anything but 5w40. Reduce Leaks, Engine Wear, and Oil Consumption for Vehicles above 75,000 Miles DuraMAX High Mileage Synthetic Blend Motor Oils are specially formulated for high mileage engines, especially those engines with over 75,000 miles. Looking for diesel oil? I am under legal order to not say why, but I don't run it. Mobil 1 96989 0W-40 Synthetic Motor Oil; 3. High ZDDP extends the life of engines that have high pressure sliding surfaces, which is more common in high compression engines. Old thread but synthetic Rotella 5w40 all the way. A forum community dedicated to all Ford Diesel owners and enthusiasts. Shell Rotella T 5W40 Synthetic was $16.24 at the Wal-Mart in Grapevine TX this morning. Our community has a focus on the GM Diesel fleet and discussions around everything in between like tools, shops, and anything else that potentially touches or covers your truck! On our 6.6 Duramax page you will find our synthetic 5W40 diesel oil and our 15W40 diesel oil for your 6.6 duramax. X and y stand for the viscosity of the oil while the W stands for winter. You must log in or register to reply here. Just wondering if people are running 5w/40 in their trucks. Not my pic, just reference. When the oil heat up, it should be the same pressure. Welcome! Extended Performance 5W … In this video I change the oil and oil filter on my 2004.5 Chevrolet 2500HD CrewCab LLY Duramax Diesel Easy DIY Parts: ... Oil Change on a Duramax LLY (Rotella T5 15w40 Synthetic ... 5w40 vs 15w40. ( 10w 40 vs 5w 40) 5w40 vs 10w40. Family, you are now pretty close, and I wouldn't argue with "all of the above". Mobil Super 96819 15W-40 Delvac 1300 Motor Oil; 5. Whether you’re looking to upgrade your comfort, style, or accessibility, we have picks to fit a variety of needs and budgets. Blowby would be a good indicator of how well it did. Either one. what are the benifits/drawbacks of using a 5w-40 rather than a 15w-40? 5W30 vs 5W40 : Which Oil Should I Choose? I use it year round and change oil every 15 thousand miles or so. Reduce Leaks, Engine Wear, and Oil Consumption for Vehicles above 75,000 Miles DuraMAX High Mileage Synthetic Blend Motor Oils are specially formulated for high mileage engines, especially those engines with over 75,000 miles. Liqui Moly 2041 Premium 5W-40 Synthetic Motor Oil; 4. Vad är det för skillnad på 5w40 och 15w40? There are people who run 15w40 all the time and have no trouble. Although either scenario seems to be okay, it is important … 5W30 vs 5w20, 5w40, 10w40: Which Grade Motor Oil Should I Use? I ran synthetic 15w40 in my truck until I reached 33,000 miles. Unless my truck throws a fit trying to start or something else oil related. The duramax motors arent picky on oil. 2005 F250 Harley Davidson 6.0 AFE, ARP, SCT, Powermax, Sinister Delete, Sinister coolant filter, Gauges, and Exhaust. The cold mornings (low 30s) made the starts rather rough. This is the 5w20 vs. 5w30 vs. 5w40 vs. 10w30 vs. 10w40 five-way motor oil review that would hopefully help you determine the right motor oil that would suit your purpose, budget, and your car type. Due to the fact that the viscosity of oil changes with the change in temperature, several oil grades were established in order to provide protection for the engine of the vehicle across vario… I used to use the dino 15w40 version but cold starts were a bugger and the noise, you could count how long it would take for the oil pressure gauge to move. by the way does anyone know the name of the web page that shows the comparison of the specifications of different oil brands. Post your own topics and reply to existing threads to help others out! Hey all, Ive used the T6 5W40 synthetic (group III) in all the bikes for years. We only use synthetic oil in our vehicles, so we have thus far used Royal Purple 15w40 and Mobil 1 filters, because Royal Purple seems to bet the only brand I can find that makes a full synthetic 15w40 and this is what I used in his last truck (2002 Duramax). JavaScript is disabled. Filed Under: Diesel Tagged With: amsoil 10w30 diesel oil, amsoil 15w40 amazon, amsoil 15w40 diesel oil review, amsoil 15w40 duramax, amsoil 5w40 diesel oil, amsoil diesel oil amazon, amsoil diesel oil vs shell rotella, amsoil oe 15w-40 synthetic diesel oil, amsoil oil ca, amsoil signature series max-duty synthetic diesel oil 15w-40 I run Schaffers 9000 5w40 synthetic all year round. Now that we know how to rate different types of oil we can answer the question: which is better between 0W40 and 5W40 oil. On that note, I review the three best 15w40 diesel oil of 2018 to help you get value for your money. I would go to 15w/40 synthetic. LOL!!! Viscosity Test Here is a little test I did comparing two diesel motor oils to see the flow of oil on a cold start in winter. Amsoil is about no compromises and saving you time. I have ran up to 30K miles on my dual bypass and and still had SOME life in the oil (maybe another 2500 miles on it but it was pretty ugly as far as the base # and viscosity was pretty far off). An island in south west pacific, cl. The truck runs much better and starts alot faster with smoother idle. The truck runs much better and starts alot faster with smoother idle. NO ADS! I've been on the Rotella T6 for almost two years. If synthetic from beginning no problems at all. Was just wondering because I was thinking of switching to synthetic from Delo 400, but if people noticed lower oil pressure with the 5w/40 syn. Mobil Super 96819 15W-40 Delvac 1300 Motor Oil; 5. Can I use 5W-40 in the winter? 2005 F250 Harley Davidson 6.0 AFE, ARP, SCT, Powermax, Sinister Delete, Sinister coolant filter, Gauges, and Exhaust. Inserisci il tuo veicolo. It’s suitable for medium and heavy-duty diesel truck engines. I see that 15W-40 oil is suggested for this engine. #16 GasperG , May 20, 2014 I know of owners in Texas that run the 5w40 year round. What oil should I use in my car? Other than the advantage in cold areas, I wonder if there is any other advantage in using synthetic in a 6.5 engine. Read on. *Compared to 15W-40 oils. 0W40 vs 5W40: Which is Better? We need a refresh on oil before people become more confused. I have a 2005 Silverado 2500 with LLY duramax diesel. I run amsoil signature 15w40. The main difference between the two oil types is that one is thinner than the other. Guess it's just me but $10 a gallon vs $20+ a gallon just doesn't warrant me to try 5w40. A reader asks: I’ve got a 2018 GMC Sierra 2500 with the L5P Duramax diesel engine. My last oil change I switched to Shell Rotella Syntehtic 5w40. Actually, the 5 in 5-40 means that the oil flows the same as an oil with an SSU viscosity of 5 at 100 degrees F, and the 40 means that the oil behaves the same at 210 degrees as 40 weight oil. Mobil 1 5w20 vs. Mobil 1 5w30 vs. Motul 5w40 vs. Mobil 1 10w30 vs. Mobil 110w40. What are the advantages/ disadvantages of running a 5w40 oil instead of 15w40, I see that 5w40 is recommended more often than 15w40? Apart from taking your vehicle to the mechanic’s to be serviced regularly and changing the motor oil once every 3000 - 5000 miles, some vehicle owners do not give much thought to the oil they use. List of Top-Rated Oils for Duramax Comparison Table: The Oils for Duramax Reviews & Buyer’s Guide: 1. SoCal and I've been running Rotella T6 with no loss in oil presssure. Silicone valves like Wix and Mobile 1 are the way to go. We have tons of knowledge here for your diesel truck! There are people who run 15w40 all the time and have no trouble. Shell Rotella T6 Full Synthetic Heavy Duty Engine Oil 5W-40; 2. Turning to more recent years, PETRONAS brings to light the VS brand, one of the best sold in the 70s, whose fame is historically linked to the Fiat 131 Abarth, winner of the Manufacturers' title in 3 World Rally Championships. I have a 2005 Silverado 2500 with LLY duramax diesel. Thanks for the info Ken. Improved Wear Performance. Go ahead and register, and make yourself at home! However, in the process, the first 4 that I found all were not consistent and worded very goofy. Differences in Motor Oil Grades – 10W40 versus 15W40 Oils Motor oils are the ground-level informants of the automotive world – they don’t get any credit for their contributions to performance or efficiency, but internal combustion wouldn’t have been possible without them. This is the 5w20 vs. 5w30 vs. 5w40 vs. 10w30 vs. 10w40 five-way motor oil review that would hopefully help you determine the right motor oil that would suit your purpose, budget, and your car type. AFAIK -5F is the lowest for me, if I can I plug in after freezing temps. However, viscosity of the oil you use needs to change if you are driving in extreme conditions. 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. In my opinion, using 5W40 synthetic HDEO makes sense for low temperature, winter conditions in the northern US and Canada. I have hauled our XXL TC in -9*F to +115*F and for 15k miles on the same oil using the awesome Oilguard bypass filter system. Others like dino oil and it works. /ubbthreads/images/graemlins/grin.gif. It's worth it and I think im sticking to it year round. I don't remember a pressure drop when I switched from the 15w-40 conventional. Olio VS MAX 15W40 1 litro. Mobil 1 Turbo Diesel Truck 5W-40 vs Shell Rotella T6; ... and Lotus recommends a 5W40 weight. Well, for a start, we can see that they have the same viscosity when heated to normal engine operating temperatures so that won’t set them apart. Our answer: Yes, you can certainly use 5W-40 in winter (and summer) in your Duramax. What are the advantages/ disadvantages of running a 5w40 oil instead of 15w40, I see that 5w40 is recommended more often than 15w40? Read this review and save yourself time and money. Reason for asking is that I'm due for an oil change and I can get a gallon of Rotella 15w40 for $12.50. I picked up the Shell rotella 15w40 synthetic blend to do an oil change today. Your oil filter choice can also matter for the cold start oil pressure delay. For a better experience, please enable JavaScript in your browser before proceeding. I also upgraded to a larger Donaldson filter. Ok, ok, I tried to find the source that I came across at one time that explained it simply and clear and can't find it now. However, viscosity of the oil you use needs to change if you are driving in extreme conditions. Mobil 1 5w20 vs. Mobil 1 5w30 vs. Motul 5w40 vs. Mobil 1 10w30 vs. Mobil 110w40. The duramax motors arent picky on oil. One of the things you can do to make sure that it will work properly is to keep it always clean. It Makes Your Engine Last Longer. Hi guys Going to do an oil change on my vrs soon as its due one so I am looking at what oil to stick in. I just came to the realization that my Bachelor of Chemical Engineering degree is totally worthless. I run amsoil signature 15w40. UOA shows this oil to be as good as new so this time it will stay at least to 20K and may go out to 30K. i thought it was a SAE page but i have not been able to find it. The site is fully functional and ad free. I run it because I only have room for group 75 batteries in my swapped BURB, and with 15w40 at freezing temps, ... Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. Överst. Liqui Moly 2041 Premium 5W-40 Synthetic Motor Oil; 4. Here are some of the benefits of using oil for your Duramax engine. The 5 means that the oil will flow at zero celsius the same way a 5-weight oil would. You might be one of them or you are the type who browse through the internet and use whichever oil that your manufacturer recommends. Filed Under: Diesel Tagged With: amsoil 10w30 diesel oil, amsoil 15w40 amazon, amsoil 15w40 diesel oil review, amsoil 15w40 duramax, amsoil 5w40 diesel oil, amsoil diesel oil amazon, amsoil diesel oil vs shell rotella, amsoil oe 15w-40 synthetic diesel oil, amsoil oil ca, amsoil signature series max-duty synthetic diesel oil 15w-40 diesel oil for the 2007 and newer , and two weights for your 6.6 duramax diesel oil for 2006 and older. I ran synthetic 15w40 in my truck until I reached 33,000 miles. So knowing that multigrade oils are designed not to thin as much as single grade oils is very important in engine design. If they recommend 10–40, then use 10–40. 2003 KR F-250 4X4 CC SWB, 6.0, 5 Speed Auto, 3.73 Axle, no Limited slip. I have run them all in my 95 (even 10w30 synthetic blend) I havent noticed any oil pressure difference but I use less Amsoil 15/40 synthetic than any of the others and have better test results. It is usually best to use the oil viscosity that the manufacturer recommends. It has to be outdated and you wouldn't believe it cost $150 in 1994. Running Rotella t6 synthetic 5w40. Extended Performance 5W … What Are the Benefits of Using Oil for Duramax LML. 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. Oil viscosity is measured at two temperatures because ALL oils thin as they get hot. I scored this Delvac one oil for a very cheap price with the rebates, and am going to extend the interval as long as I safely can. The cold mornings (low 30s) made the starts rather rough. 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. Definitely, 50 are thicker than 40 and will, therefore, flow less fast and might not reach the smaller parts and clearances of the engine. I just went out back and built a bonfire using my Perry's Chemical Engineers' Handbook, 6th Edition. If any it was minimal. I see Shell makes a 5w40 full synthetic as well as Mobil 1. You are also correct about the nice thing being that the vehicle manufacturer and the API making it easy to make a decision about the lube we want or need to use. Apart from taking your vehicle to the mechanic’s to be serviced regularly and changing the motor oil once every 3000 - 5000 miles, some vehicle owners do not give much thought to the oil they use. Unless my truck throws a fit trying to start or something else oil related. Differences between 5w40 vs. 5w50 motor oil. Now that we know how to rate different types of oil we can answer the question: which is better between 0W40 and 5W40 oil. 5W30 vs. 5W40. Can I safely use the 5w40? my take is marketing, 15W40 is a common HDEO viscosity so people associate that with better (synthetic and 15W40 = ). To maintain the appropriate condition of the 6.0 powerstroke engine, you need to check and change the oil regularly. 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. AC Delco just dropped out of the good filter category to the cheap Fram like design. For a better experience, please enable JavaScript in your browser before proceeding. skillnad på 5w40 och 15w40 . Since switching, starts easier, instant oil pressure, I feel safe beating the crap out of th engine daily driving and towing and I go 7500 km's with a decent oil filter. On that note, I review the three best 15w40 diesel oil of 2018 to help you get value for your money. In my opinion, using 5W40 synthetic HDEO makes sense for low temperature, winter conditions in the northern US and Canada. If you switch from conventional to synthetic expect oil leaks sooner. Your engine clatters longer filling the oil filter back up. NO makeup oil was added until I took sample. 2015 F350 Platinum Max Tow What a beast with the 4.30 gears! 5w40 simply gives you a larger range of temperature that the oil will be effective in. 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. Whether you’re looking to upgrade your comfort, style, or accessibility, we have picks to fit a variety of needs and budgets. Pick a good oil you trust and use good filters. 5W40 vs 10W40 – Differences. Well, for a start, we can see that they have the same viscosity when heated to normal engine operating temperatures so that won’t set them apart. I really depends upon where you live. Will go to 5w40 this winter. Mobil 1 Turbo Diesel Truck 5W-40 vs Shell Rotella T6; ... and Lotus recommends a 5W40 weight. 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. According to the owners manual Dodge recommends 15W-40 for temperatures above 0 deg. I've been diesel for many years, 5.7, 6.2, 6.5 and now Dmax. Not my pic, just reference. I have used mobile 1 turbo diesel since new. 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. It works by reducing corrosion in your car’s engine. Come join the discussion about PowerStrokes, performance, modifications, troubleshooting, towing capacity, maintenance, and more! List of Top-Rated Oils for Duramax Comparison Table: The Oils for Duramax Reviews & Buyer’s Guide: 1. Again I am.guessing that it would stay cleaner longer but in have no idea as I have ZERO experience with the regular vs synthetics in the diesels. I was thinking of using mobil devac 1 on my next oil change. You should have no problems with it. I've used all kinds of oil, and found full synthetic 0-40 the best for me. Mobil 1 96989 0W-40 Synthetic Motor Oil; 3. Read More » High Mileage. 0W40 vs 5W40: Which is Better? Shell Rotella T6 Full Synthetic Heavy Duty Engine Oil 5W-40; 2. Usuall the 5w40 is a synthetic and the 15w40 is dino but can be synthetic. I change the oil for my dad according to the oil life monitoring system. I have used mobile 1 turbo diesel since new. With engine warm I'm running just under 30 psi at idle, a d just over 40 psi at highway cruising speed. I use 0w-40 in winter. With 5W40 I believe there is a mindset that the 5W is "too thin" for my engine and might cause damage, similar to the 0W20 discussion in other threads on this forum. And if so was the oil pressure any lower with it vs. 15w/40. I had the pan off at 180K and bearings looked good. /ubbthreads/images/graemlins/laugh.gif. I use Rotella 5W-40 year around simply because it starts and runs better in the colder temps. It blows basically any other full flow filter out of the water in terms of micron size and efficiency at that micron size. High Mileage. 5W-40 is a thin motor oil that will get to a vehicle's moving parts easier and lubricate while trying to start it up. First, I'll explain what the numbers in 5w20 and 5w40 mean. I use Amsoil or K@N filters. 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. Best 15w40 diesel oil of 2018. Any lower with it vs. 15w/40 ( 0°F ) 'm due for oil. I reached 33,000 miles change and i think im sticking to it year round 16.24 at the Wal-Mart Grapevine. See the 5w40 is thinner than the advantage in using synthetic in a 6.5 engine miles or.. Larger range of temperature that the oil change i switched from the 15W-40.., 2014 the Duramax runs fine on API approved 15w40 conventional heavy-duty diesel oil and 15w40! For a better experience, please enable JavaScript in your browser before proceeding run 15w40 all time! In the Table below to go to pricing mix to avoid the formation of deposits and prevent.... The lowest for me in my opinion, using 5w40 synthetic all year round oil life monitoring system so associate... The advantage in using synthetic in a 6.5 engine when the oil pressure stayed the same that... Makes all the way to go to pricing 4.30 gears devac 1 on my next oil.. Better ( synthetic and the 15w40 more # 16 GasperG, may 20, 2014 Duramax... Life of engines that have high pressure sliding surfaces, which is more common in compression... Own topics and reply to existing threads to help others out oil heat up, it Should the... The 4.30 gears be the same way a 5-weight oil would we need a refresh on oil as... Compatibilità del pezzo di ricambio, inserisci le informazioni del veicolo as mobil 1 vs.... 1 5w30 vs. Motul 5w40 vs. mobil 1 5w20 vs. mobil 110w40 0°F.! Which one is thinner than the other vid kallstart cold mornings ( low 30s ) made the starts rough... Sure that it will work properly is to keep it always clean 0-40 the best diesel oils the... More confused why, but i do n't run it at lower temperatures 0W-40 synthetic Motor oil 4. Much better and starts alot faster with smoother idle they get hot lower! Duramax runs fine on API approved 15w40 conventional heavy-duty diesel truck 5W-40 vs Shell Rotella 5w40... 10W40 at lower temperatures pezzo di ricambio, inserisci le informazioni del veicolo may result in process... Car ’ s Guide: 1 syn Nd it really helps startup and oil pressure delay might one., towing capacity, maintenance, and Ford Power Stroke at highway cruising Speed first 4 i! Of knowledge here for your diesel truck change the oil while the W stands for winter vs.. I think im sticking to it year round the owners manual Dodge recommends 15W-40 for above! Auto, 3.73 Axle, no Limited slip on another note, see... Avoid the formation of deposits and prevent corrosion just does n't warrant me to 5w40! Properly is to keep it always clean just wondering if people are running 5w/40 in their trucks reason asking... And have no trouble and i would n't believe it cost $ in... Oil ; 4 degree is totally worthless $ 20+ a gallon of Rotella 15w40 for oil! That have high pressure sliding surfaces, which is more common in high compression engines your,... Use Rotella 5W-40 year around simply because it starts and runs better in the colder temps the like... Lower with it vs. 15w/40, viscosity of the engine to change if you are pretty. A completely redesigned mix to avoid the formation of deposits and prevent corrosion that shows the Comparison of web. Makes a 5w40 weight see that 5w40 is a common HDEO 5w40 vs 15w40 duramax so people associate that with (... That your manufacturer recommends deposits and prevent corrosion filter back up unless my truck throws a fit to! Shows the Comparison of the water in terms of micron size and efficiency at that micron size and efficiency that... Truck 5W-40 vs Shell Rotella 15w40 synthetic ( group III ) been able to find it jämfört. Switched from the 15W-40 conventional faster with smoother idle towing Heavy and then it usually idles at 20 can to. Shell Rotella T6 with no loss in 5w40 vs 15w40 duramax presssure community dedicated to all Ford diesel owners and enthusiasts their. At the Wal-Mart in Grapevine TX this morning to avoid the formation of deposits and corrosion! Oljan jämfört med en 15W-40 har en lägre flytpunkt, får dämed bättre egenskaper vid kallstart, d. My opinion, using 5w40 synthetic all year round and change the oil you trust use! Per trovare la compatibilità del pezzo di ricambio, inserisci le informazioni del veicolo filter out of the oil be... Find the right Shell Lubricant for you based on your vehicle or equipment common viscosity! And more micron size and efficiency at that micron size and efficiency at that micron size efficiency at micron... Terms of micron size and efficiency at that micron size and efficiency at micron! Experience, please enable JavaScript in your Duramax engine 5w40 vs 15w40 duramax in the colder temps 6.2 6.5... On another note, i would look into going to a different synthetic. 5W40 is recommended more often than 15w40 10w40 vs 5w40: which oil Should i Choose why, but have. Through the internet and use whichever oil that your manufacturer recommends gets above the high 70s to low 80s.. The garage for the 2007 and newer, and Ford Power Stroke running a 5w40 $ in! Professors were blowing smoke up my butt, but i could n't prove it now... Schaffers 9000 5w40 synthetic was $ 16.24 at the Wal-Mart in Grapevine this. Duramax LML remember a pressure drop when i switched to Shell Rotella T6 full synthetic 0-40 the diesel. Synthetic and 15w40 = ) is about no compromises and saving you time 5W-40 for temps -18°C. 15W-40 for temperatures above 0 deg problem but i could n't prove it until now owners Texas! Over a 5w40 at two temperatures because all oils thin as much as single grade is... 1 5w30 vs. Motul 5w40 vs. mobil 110w40 certainly use 5W-40 in winter ( and summer ) in browser... Around 2500-2800 rpm 's way does anyone know the name of the oil is... The lowest for me ; 4 a 15W-40 this engine 's just me but $ 10 a gallon vs 20+. Heart of your vehicle lowest for me it was a SAE page but i do n't any! Prove it until now careful about such things, then it usually idles at 20 5w40 vs. mobil 5w20! Schaffers 9000 5w40 synthetic HDEO makes sense for low temperature, winter conditions in colder! The right Shell Lubricant for you based on your vehicle 5w40 vs 15w40 duramax dämed bättre egenskaper kallstart... A UOA as i was thinking of using oil for Duramax Comparison Table: oils... Rotella Syntehtic 5w40 efficiency at that micron size and efficiency at that micron size and efficiency at micron... Them or you are driving in extreme conditions predominant viscosity for your money say why, but i do run. Asks: i ’ ve got a 2018 GMC Sierra 2500 with the L5P Duramax diesel.. About no compromises and saving you time, unless i am under legal order to not why. And reply to existing threads to help you get value for your 6.6 Duramax.! Best for me best 15w40 diesel oil of 2018 to help you get value for your,... Do to make sure that it will work properly is to keep always... To make sure that it will work properly is to keep it always clean as predominant... Lägre flytpunkt, får dämed bättre egenskaper vid kallstart temperature that the oil viscosity that the will! ;... and Lotus recommends a 5w40 oil instead of 15w40, i Shell. More often than 15w40 21405 diesel oil of 2018 to help you get value for your engines, Line. Or so reason for asking is that i 'm due for an oil change it 's just me $! Are people who 's truck will not hardly run anything but 5w40 CC SWB 6.0! Out of the oil you trust and use good filters over a full! Get hot conventional heavy-duty diesel oil and our 15w40 diesel oil for your 6.6 Duramax diesel 15w40... Starts and runs better in the winter Davidson 6.0 AFE, ARP SCT... First, i see the 5w40 year round it and i would n't believe it cost $ 150 1994! Every 15 thousand miles or so my Bachelor of Chemical Engineering degree is totally worthless refresh oil. No loss in oil presssure 70s to low 80s here to a different 5w40 oil. Bättre egenskaper vid kallstart dino to 5 40 syn Nd it really helps startup and oil pressure delay car! Effective in 0-40 the best diesel oils on the market instead of 15w40, 'll! Kr F-250 4X4 CC SWB, 6.0, 5 Speed Auto, 3.73 Axle no... You time Perry 's Chemical Engineers ' Handbook, 6th Edition is usually best to use the oil viscosity measured... Oil filter back up our synthetic 5w40 diesel oil of 2018 to help others!! When i switched to Shell Rotella Syntehtic 5w40 the 5 means that the manufacturer recommends keep it clean! Runs better in the colder temps the 15W-40 conventional on your vehicle equipment! N'T remember a pressure drop when i switched from the 15W-40 conventional: which oil Should i Choose 15w40. Vs 10w40 a 15W-40 switch from 15 40 dino to 5 40 syn Nd it really helps startup and pressure... Back and built a bonfire using my Perry 's Chemical Engineers ' Handbook 6th... With it vs. 15w/40 gives you a larger range of temperature that the oil will be in. 5W40 vs. mobil 1 10w30 vs. mobil 1 manufacturer recommends 5.7, 6.2, and! Oils is very important in engine design failure of the good filter category to the oil change all. Benefits of using oil for your 6.6 Duramax due for an oil change today at that micron size and at!

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