Did you see any oil in the recess where the plugs bolt into the block?
A lot of times leaking valve cover gaskets will have oil leak down into the recess, then it makes its way onto the plugs.
Could be head gaskets too........
__________________ 2008 Mustang GT Premium 5 speed, 3.55 gears, black-on-black, IUP, 18in polished aluminum wheels, FRPP GTA Axle Backs, JLT II CAI w/SCT X-Cal 2. 296HP & 311TQ
"Some people live their entire lifetime and wonder if they ever made a difference to the world. Marines don't have that problem." -- Ronald Reagan |