All

Well I am half way through my first project on my 89 300SE (W126) with the M103 engine.

Here is the link to my previous post - http://www.peachparts.com/shopforum/showthread.php?t=275068

Got the upper timing case seal and Cam Seal changed out and I started on the Plugs, wires and cap/rotor. I pulled number 1 plug and found a Bosch H8DC in there and it had a gap of .045!. It looked pretty good but had some center electrode wear. H8 is a different heat range correct? I have the proper H9DC0 plugs I am replacing them with. (note NO R! )

So do i put any Dielectric grease on the insides of the plug wire ends? any thing in the center of the Rotor?

Any other tips are always appreciated? Working with that half broke fragile wire tray should be fun.

I have not looked at the new wires yet so if they have instructions that tell me to do so this will verify that! thanks.