1997 6.5 Burns More Oil on Local Trips

Volume 2 Issue 3 - 6.2/6.5 Issues and Answers

I have watched it carefully for years now and find that my 1997 6.5 GMC one-ton uses more oil when I am driving locally than it does when I tow my horses on long trips. This makes no sense to me. Can you provide some explanation? P.S. – Really appreciate your magazine!

Your engine features a crankcase pressure control system, designed to maintain a negative pressure inside the crankcase under a wide range of engine operational conditions. Key to this function is the

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