GM 8.1 496 gas engine "normal" oil loss/use?
Just returned from our first looong trip with this truck and camper package and noticed (what I think) excessive oil use. The does not leak but in 3800 miles needed 1 1/2 qts., that seems like a lot t...
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My '01 2500HD with the 8.1 used more oil than I thought it should with 5w-30. 10w-30 slowed the usage and 15w-40 stopped it.
Used oil analysis says the 15w-40 worked well in the 8.1
Used oil analysis says the 15w-40 worked well in the 8.1
