Actually, it's 100,000 miles, assuming you're using a synthetic blend.eltupac said:Thanks again. Let me ask you. The car has 42,000 miles. I have done the regular maintenance in the car, such as air filter, PCV, fuel filter, trans filter & radiator flush, oil changes. The dealer said that tune-ups are every 80,000, is this right? I used to do tune ups every 24,000 miles. Can it be that these motorcraft sparks are that good? I will measure the voltage on the TPS, but to get that thing cleared about the tune up, is the dealer right? Also, what else should I do or check?
yeah, the factory recommendation is semi-synth. it keeps the engine wear down, and the combustion chambers cleaner . . . you also get better mileage . . .eltupac said:No I am not, I use regular Castrol.