AlexMercedes

Hello, I recently got a 1997 S500 and I am about to do some maintenance work on it. One thing that I found conflicting answers about was what type of spark plugs to use for the 97-99 M119 motors. I heard about using the standard copper Bosch F8DC4 plugs, but I heard those were only for the older 92-96 motors and that the newer ones use different plugs, and I couldn't find any information on what spark plugs to use on the 97 and up model. What is the best and correct plug? Any help would be appreciated, thanks.

oldsinner111

Cheap copper plugs

daddiojiggy

what does that mean?

oldsinner111

copper plugs for performance work best,even with alcohol as fuel. Higher cost plugs last longer but don't give performance for certain fuels.I hate Bosch,and went with Champions.