def. motorcraft. plugs.

i had my plugs changed in early march...got it back truck was running fine. then i started hearing a miss. within the next 50 miles or so #7 plug blew out(probably because the mech. didnt torque it down just right) and i had my truck towed back to the shop. they replaced the plug and gave me a new coil and no problems since...ive put a few thousand miles on her since. good power all the way through.

i worried i was gonna start having blow out problems and feared id be time-serting. but nope, my threads were still intact. oh and i waited till about 128k too...i thought the originals were gonna go forever... your probably bucking up hills and stuff like that. get them done soon

g/l