I was curious as to what type of MPG I should be getting. I drive 65 miles/day with about 5 of that city, the rest on open road. Cruise set at 60-65. Auto with 3.55's 4x4 and only get about 15 mpg. Is this normal? How can I get better? My tire size is 285 75 16. The truck only has around 235,000 miles on it. Thanks.

 

Should be a good margin higher than that. What is the condition of your TC? What about your pumps? Better fuel delivery results in better economy in these trucks so without a gauge you'll be hard pressed to see that.

If you are running cruise and 100 k/hr like you are I'd think that you should be around what equals 21+ US MPG.

 

I get better than that with all my mods done. You should be able to pull 18 easy.

 

what kind of mods do you have you should be getting better my friends get 18 with 44 inch tires

 

Completely stock. Haven't checked my pump, gonna get a gauge as soon as money allows and overall, seems in real good shape. Could the pump be an issue? Would a better air filter help? What about a better exhaust? Thanks.

 

Mine gets 16.5mpg hand calculated.

 

It could be. Poor fuel economy can result from a poorly functioning VP44 injection. It is more likely in your case that the TC is bummed though as this tranny is commonly referred to as the slush box. Get a BD valve body and TC or some other sort of combo and watch the mileage climb.

 

Hey you should be getting at least 18 i get 22 all stock ssept hypertecmax energy and k&n air intake i have a few other little things that wouldnt matter

 

check your fuel filter too

 

235,000 mi. Maybe a valve adjustment might be in order too along with the things mentioned previously