Well over the summer I averaged 14.5 mpg. Within the past moth my milage has dropped to 13.5 mpg, I had 230 miles on E. I then switched to moble 1 synthetic and a new fuel filter hoping to maybe obtain 15 mpg but by the looks of it I won't even see 230 miles but more like 215 miles on E but this is taking it super easy on the gas, I never exceed 2000rpm and try to cruise at 45 mph@1500rpm on the local streets. Now I am not expecting super milage because I drive 90-95% city but there is no way I could see 14.5 mpg right now. I will see my real milage when I get gas tomorrow but I have chaged the 02 sensors and spark plugs, what else shouls I look for?
98 XLT "Off Road" 4x4, Gutless 4.0 Automatic, 4.11 265/75/16, Supercab, SCT Tuned