Oil in spark plug well

[Ldub]

Just throwin' it out there as a possibility(on the misfire issue)...maybe a cracked insulator on one of the plugs???
My guess would drivers side/rear.

[CoastieCosta567]

If i was you i would take it to a mech, trust me, it's worth it.

[ojmagg]

I have not had any more miss-fires from my engine...I believe that this condition was caused by too much anti-sieze on the plug threads...

I have gone from abt 12 mpg to 16 by changing plugs...I changed out the origionals with Iridium Power #IK16's...had abt 70k on the orig plugs...