Hmmm maybe. Anybody know of a good RPO decoder? I'll run through my RPOs to see what I have since my truck is 98.351% (lol) stock.

 

lol my fuel gauge doesnt work & i was pullin up to the pump one day & my truck just died luckly i was at the pump haha! but my truck only filled up 17gal

 

a more aggressive tire tread will lower ur gas mileage too. epa estimates arent that great, its off for my celica, was off for my nissan. i havent checked the blazer yet.

 

I get between 17 and 20MPG. I usually fill up at Chevron or Shell and always 89 octane.

 

I filled up Monday morning before work and the truck took 15.3 gals, and I had 269 miles on her since last filling up and that came out to be 17.5 mpg. But I know I need to do a tune up, hoping I get better milage after that.

 

if your temp gauge is only reading 185 tops you need a new thermastat 200 to 210 is the proper temp range to keep the computer happy for smog reasons on freeway driving i got 18 to 20mpg with my 94 cpi

 

I have a 3" lift on my 91 and i run a set of 31" Bf Goodrich All Terrain T/A and i do a lot of city driving and average around 14 mpg Filled up the other day and cost me $56 for roughly 250miles. This is even after i did a tune up, stupid gas guzzling pig..I love it