15W40 conventional or 5w40 sythetic are the GM recommended oils for the Duramax Diesel engine, right out of my owners manual. 10W30 is specifiaclly not recomended in the owners manual. I've had two Chevy's with Duramaxs. Totally trouble free, best diesel engine on the market.
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Today's Featured Article - Two-Brush Generators - by Chris Pratt. Whether for product liability or because the aftermarket parts and labor business is lucrative, this concept is disturbingly prevalent. Fortunately when you step into your shop and make that jump 50 years back in time to work with your old tractor, this concept goes out the window. Even so, when it comes to the charging system, people quickly revert to this idea and start replacing the major components one at a time until it works. The reason you don't find any decals in your replacement set wit
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