No Wet, oily deposits. Will cause weak spark and eventually
misfire.Fault: worn bores/piston rings or valve guides; sometimes
occurs (temporarily) during running-in period. Plugs can be re-used
after a thorough cleaning. [http://www.hioutput.com/tech/plug.html
See pictures] [http://www.familycar.com/Engine.htm A Short Course
on Automoble Engines] Good Luck and Remember.
Change Your Mind, Not Your Oil.
Use the First In Synthetic Motor Oil's.
See My Bio For more information.