Quote:
Originally Posted by jgr
I am sure it has been ask BUT 2001 HD 8.1, is this normal....8 miles to a gallon? I could live with 10 but 8 dang
Truck only has 66000 miles on it and yes it has the allison with 4/11 gears
Any advise thanks
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HA!
Yes, that's normal ... have a buddy with 8.1 2500 Suburban 4.11 and that's what it gets too. Was jealous of them at first for being able to find a 8.1 Sub, our 2500 Sub is a 6.0, until I realized the difference in MPG.