Please help! ISX15 poor fuel mileage
11-20-2020, (Subject: Please help! ISX15 poor fuel mileage ) 
Post: #7
RE: Please help! ISX15 poor fuel mileage
It’s a square nose Pete, he should’ve expected this when he bought the truck. If he takes Jim’s advice, he can certainly improve, but he ain’t getting 7-8 mpg running 80k on the mountain grades of Canada.
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 Thanks given by: Magard


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RE: Please help! ISX15 poor fuel mileage - Explosia - 11-20-2020



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