Changed plugs for first time on truck, all plugs measured around 043-044. Replaced with OEM.

 

By the looks of the plugs from your photo they don't appear to have to of been replaced.

 

They had a little wear but gaps and color were good, prob could of waited another 25k.

 

Ya, I don't understand that 30,000 B.S. My other cars go at least 50K.

 

Wasn't it mentioned that they needed to be pulled to insure they don't seize in the heads? I have 52,000 miles on mine. Still haven't changed mine yet. Supposed to do my brake pads today but of course it decided to rain today....Ugh! No garage, so I guess I'll wait. Maybe I'll go pick up some plugs at the dealers today instead....

 

Nowhere in manual does it state that, it's just some people's opinion based on fords problems, prob good practice but if I'm pulling them their getting replaced, if you use the anti seize I wouldn't worry, none of mine were a problem to get out. MO I wouldn't worry, enough other stuff to worry about in life andddd oh yeah it's not a ford. Hehehe!