just filled up today and calculated it out to be 19.3 mpg's. 4.3(W) 4dr, stock from what I can tell. Airfilter is new. Some city with a mix of lights and stop signs, then alot of highway, doing somewhere in the 60's. 50 miles roundtrip commute to work each day.

 

'99 4 door 4x4 4.3: Solid 18 mpg on the highway, around 12 any other time (8-10 in the winter). Stupid converter doesn't help I imagine

 

98 4x4 4DR 4.3 v6. I use low grade gas cause I'm broke for the moment, Stock everything, good mix of highway and street driving. Highway is between 60-80 mph crazy winds some times. On surface streets its usually 35-45 mph. getting 15-18 MPG

 

I do not know how I managed it, but my last tank of gas, I got 21.2 MPG.

2004 bazer 4x4 2 door with 64K, stock engine, with a hunter brushguard and KC lights on the front. Mix of driving about 60 highway, 40 not.

 

Did my oil change and replaced my air filter with a K&N drop in and am now pulling 18-19

 

2003 S10 Blazer, 4WD Automatic, First drive all highway 400miles 22MPG, since then around town puttering has gotten 16MPG, we are in the heat of summer here so all driving has been with AC on. The highway speed limit was 70MPH so I would have set cruise at 75 for that trip. Wind direction unknown.

 

I cant figure out where my milage went. went I 1st got the truck I did a trip 500 miles going 80 the whole way got 24.8 mpg. I then changed my tires and it drope bad now I have to sacrafice a small animal and pray to the god to get anywhere close to 20. the old tires where 235/75s so are the new ones. It might help if I tuned it up. and I should pry just give up on worring about fuel milage if I do lift it and put some bigger tires on it

 

What kind of things can cause crappy mpg I'm not sure how many mpg I'm getting right now but it seems like I have to fill the tank a lot my truck is a stock 4.3 4x2 4 door and I drive pretty slow

 

This thread really is not for diagnosing/discussing your concerns over your mileage... Just a poll. Please search for terms like "mileage+improve" or some other combination of various words to find past posts on that subject. If you still cannot find the information you seek, post a new thread in the appropriate area.

 

had the same problem spider injector gone back and leaks internally