Originally Posted by AZfocus2012
How many miles do you have on it? I think the OEM's are good for around 100K miles, althought I might change them around 50K-75K. I have heard many on here recomend using the OEM motorcraft plugs unless you have made modifications that might benefit from a hotter/cooler plug.
42K. Wasn't sure that there was OEM ones. Will look into this. Hopefully they're not painfully expensive.