Car starts and runs fine to me. 83000+ miles, idles fine around 750 to 850 rpm. Original plugs K&N air filter use gas additive to clean fuel system every 5000 to 7500 miles. Change oil every 3500-5000 miles and do a transmission fluid dump and replace every 3rd oil change. replaced fuel filter at 70000 miles. Hwy mileage will get 22 to 23 when new got 26 or better. 3.0 liter 6 cylinder w/AWD
What can I do to improve my mpg currently 13-14 in city? on 2003 Mazda Tribute
MINOR TUNE UP WILL HELP.