Keep 2.5 or trade up to 4.0

[jfrabat]

checked it many times.. got better mileage now and then, but never got less than 20

Wow, I have NEVER seen more than 17, and my engine is in pretty good shape. And that was on 31's with 4.88 gear and a lot of highway and pampering the GO pedal. Maybe with 28's and 4.10 and not driving over 55mph I culd get it to 20's, but I doubt anything over 21.

 

[superj]

a grand gets good gas mileage all the time. my 93 grand got 19-21 no matter where we went. the wife's 93 wrangler got 19-20 no matter what. my 87 gets 9-11, no maatter what