Thanks for the replies and advice. your suggestion to drive it and not worry is what I was hoping to hear. I just don't know how fast the cams will wear now that the hardened outer surface has been damaged. The mechanic that replaced my timing chain said that once the outer surface has been removed that continued wear will accelerate and that there will be metal particles in the oil. While that may be true, I think frequent oil changes will minimize any further damage. Michael: your suggestion to use Mobile 1 sounds like a good idea, but I have heard that switching to synthetic on a high mileage engine (120K) may cause an increase in oil consumption due to worn seals. I guess I can try Mobile 1 and if I start to use too much oil I can switch back.
By the way after the timing chain was replaced the engine runs stronger than ever and it's good to have the peace of mind that I don't have to worry about it breaking. Thanks

__________________
Hud

88 560SL
97 E320