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excessive oil consumption
Posted to HD/Fleet Forum on 10/26/2020 7 Replies

1GDE5C1G89F406246 09 GMC 5500 8.1 LP gas I think we have a crankcase vent problem. No oil leaks, no tailpipe smoke, no fouled spark plugs. It has 34079 miles on this JASPER engine. It consumes 3 quarts of oil every thousand miles like clock work. I need advice... Login to read more.

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