I am getting 12.5 miles to the gallon. I have done plugs, plug wires, PVC, fuel filter, radiator flush, distributer cap, distributer roter, chevron techron, air filter, and a oil change. Do you think that it could be my O2 sensor causing this? Any other sugestions? I used to get much better milage and cant figure it out.
1995 Extended Cab Truck, 4X4, 4.3 V6 TBI, 31/10.5/15 BFG AT's, American Racing Rims/8"/Neutral, 3" Trailmaster Body Lift, Westin Side Bars.