Quote:
Originally posted by gsxr
Eeeek - do you mean that your temp gauge, on a 1984 300SD, was up to 119-120C? That is way, WAY too hot - you have some other major problem. My 1984 300D (same engine) has never crossed the 100 mark (line between 80 & 120) under any conditions, including 110F ambient temps with the A/C on max...!
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Read the factory service manual and the service bulletins on this.
The service bulletin for the 617 engine says that it is OK for the gauge to get up to the top white line (approx 120C) on long hills, at high speeds and in stop and go traffic. With the proper mix of coolant, the engine is fine up to 126C.
What yours does is good. So long as mine stays out of the red, mine is OK also. BTW, I have not yet confirmed that my gauge is accurate, either. I just assumed it was when the weather was cooler because it would reach 80C and stay there. I have confirmed that I do not have a blown head gasket and am not losing fluid. Could be the radiator. Still not a major problem IMHO. Thanks, though.