I am getting horrible gas mileage in the 99 4Runner like 12. Am I doing something wrong? The engine runs great, sounds great. I have kept my foot out of the gas this tank hopefully it will improve. Am I in 4wd and I do not know it??
No check engine light at all, new O2 sensors 177k miles, new oil, new diff fluid, new tranny fluid, new bearings, 40PSI in tires, new tires. New plugs, and wires done at 120k mi. ECT on or off better?