What does it take to make 20k mile oil?
One of my fravorite You Tuber's, Jason Fenske, at Engineering Explained gives us an inside look at what kind of R&D it takes to make a 20k mile oil. Notice the 500k test miles they put on the Silverad...
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The cost of an oil change for a diesel engine is more of an issue. They generate a lot of hydrocarbons and the crankcase holds about 15 quarts. The cost of an oil change is around $150 for good synthetic oil, but it is definitely worth it.
