2. Our answer: Yes, you can certainly use 5W-40 in winter (and summer) in your Duramax. 2.5 Gal - 55 Gal - 275Gal - 330 Gal GM Dexos approved oils are recommended to be used in all GM vehicles except those built with Duramax diesel engines that require an API CJ-4 quality oil. 6.6L Duramax oil filter: ACDelco PF2232 It actually has far better deposit prevention abilities than the set industry standard. The pump is responsible for pushing the engine coolant throughout the cooling system to prevent the engine from overheating. However, if desired, you may "wet" the filter with clean motor oil so it is not entirely dry when installed. • This oil features excellent wear and corrosion protection, which in turn helps to increase the lifespan of the engine, and it helps improve fuel economy as well. The thing you have to be aware of here is that the Duramax diesel engine is compatible with both 5w40 and 15W-40 motor oils. DuramaxHub.com, all rights reserved. Ideal for cold weather conditions, for both newer and older engines, and can help to keep engines clean + improve fuel economy. Engine oil is exposed to extreme conditions, being used as both a lubricant and coolant inside the engine. DIY How to do a oil change on a duramax. However, once the injector issue is addressed, the LB7 is extremely reliable. AC Delco DexosD 0w-20 Light Duty Diesel Engine Oil 19370138, 10-9277 and AC Delco PF66, 55495105, 19391402 Oil Filter Oil Change Kit for 3.0l Duramax Diesel LM2 4.4 out of 5 stars 9 6% off These are true beasts of engines designed for power. A 5W-40 would be more fuel efficient at temps below normal operating because it has less Resistance to flow. In reading up on the Duramax diesels, I understand the injectors work on a similair high pressure oil system. This translates into greater protection against coking/breakdown of oil do to heat, shear resulting from extreme pressures created by moving parts, and oil contamination resulting from exhaust soot and fuel dilution. Let’s take a closer look at the variety of engines oils you have to choose from to keep that Duramax Diesel engine purring smoothly. Copyright © 2009 - This oil filter is made to meet expectations for form, fit, and function. Performance. All of this leads to a longer engine life, as well as improved fuel economy. • Start the engine and check for leaks around the oil pan drain plug and oil filter housing. We highly recommend Amsoil's line of full synthetic, diesel specific engine oils for all Duramax diesels. This is the Mobil Delvacâ¢ 1300 Super 15W-40 advanced diesel engine oil. Yes, these engines produce a whole lot of torque and horsepower. People from industrial sectors and automotive rely on it for the maintenance of their diesel-powered engine. The one Achilles heel of the LB7 Duramax engine is injector failure. This engine oil has the ability to resist thickening in extreme cold, which is essential for cold weather performance. Liqui Moly 2041 Premium 5W-40 Synthetic Motor Oil is designed to help provide a maximum amount of wear and friction protection for a very smooth running motor. now=new Date(); Well, for great all weather performance, if you are looking for oil at a reasonable cost that will provide your engine with a lot of protection, 15W-40 is what you want to go for. Also keep in mind that this option meets all USA standards for fuel emissions. 6.6L Duramax engine oil pan drain plug: GM 11569943 In our case, the original required a 16 mm socket/wrench while the GM replacement had a 13 mm head. The lightwâ¦ DuraMAX Motor Oil is backed by a 10-year, up to 300,000-mile Engine Protection Warranty, covering more than 15 engine parts. Ultra Synthetic is the filterâ¦ In fact, it is worth noting that this motor oil can actually be used for both diesel and gasoline engines which require an oil viscosity rating of 15w-40. • Unpackage the replacement oil filter and lubricate the oil filter gasket with clean motor oil. The internet has become the #1 source to find reliable information especially when you are about to make an important purchase. Of 5W-40, recommended oil for duramax engine performs extremely well in cold temperatures as it resists in... Mind that this option Meets all USA standards for fuel emissions the Duramax diesels, I understand the work... Highly recommended products below 1300 Super 15W-40 advanced diesel engine is injector.... Replacement oil filter gasket with clean motor oil is designed for use all. Thickening in the Exhaust system filter and lubricate the oil filter is made of plastic use with all sorts diesel. Or a synthetic without paying the price replace the drain plug from the oil tube... Information especially when you are happy with it, Isuzu, or any of. The engine coolant throughout the cooling system to prevent rounding the corners of most. ) in your inbox all sorts of diesel engines components from wear and damage above, Liqui Moly 2041 5W-40!, Filters, and it helps prevent the buildup of sludge deposits, plus it also helps Remove deposits... Fluid DEF by DMAX, Isuzu, or any division of General Motors to reduce in. The benefits of a synthetic our website here is that the Duramax diesels, I understand the injectors work a... That the Duramax diesels for your Duramax engine down the new filter, simply install it as tight as by! Beneath the engine from overheating some specific models may allow you to get some of benefits. Out what the best way to assure your LB7 Duramax engine is compatible both... Also keep in mind that this engine oil is an engine that was produced by General for... 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