- Apr 27, 2004
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The best MPG I ever got was on a 1990 5.0 I could get 33mpg on the highway doing a steady 65...Honest....the best I got on my 1999 4.6 was 24 mpg these were done on long trips ...same drill AC on & windows up steady driving, its the lower # gear ratio that brings up the mpg...the late model's just have that higher #'s. no matter what I have tried 23-24 is the best on the road, I sure wish I could get 100 miles on a 1/4 tank....my guage is also funny like the other guys said and drops quickly after that first 1/4 tank.... But thanks again to that great post on drilling the rivitts out on seats did it and some difference....... Johnny