PeachParts Mercedes-Benz Forum - View Single Post - Strange overheating problem on 1996 S500:

JimF · #2 12-14-2011, 02:27 PM

Looks like you have throughly and methodically gone through the car's cooling system.

Have you replaced the "cap"?? What's the operating temp while driving??

Have you checked the af/water ratio YOURSELF?? If you're in a warm climate, try a 40/60% ratio if you haven't already done so.