So all i was able to find is 0.60's was a dealer number to help plugs last 100,000 miles and 0.54 is recommened by ford and all auto parts stores? My plus came out of the block at 0.070 give or take. Its lost the power a little each year i've had it. I got 3 done tonight going to do other 3 tomorrow. One on the drivers side wont break loose. Have to try tapping on ratchet or somehting. All the fords i've ever owned have had plug gaps in the 0.050's
Strange I called the ford dealer and they swear they've never heard of a gap 62 to 68 like my decal states.
2004 XLT 4x4, 265 75 R16 Cooper STT's, 4.10 8.8inch, Rancho Shocks, T-Bar crank