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Originally Posted by XLT98
More of my reserch found that the factory plugs are good for 100,000 miles. This is great. If all these things are made to last, I could trade it in 5 years for another one without major repairs  |
Hahahaha It's still a ford no matter what the manual says. As far as plugs, go with motorcraft everybody I talk to says that after replacing their plugs with anything else has problems. On the KN I would say do it even though I did not really notice an gains as far as horsepower goes.