Hi - and yes, I did search the forum before posting this question.

Just bought an '83 sd with what seems to be 125,000 genuine kilometers (about 80,000 miles). Old cap on the expansion tank was shot so I replaced it with a new MB part.

Now the coolant level is settling about 2" BELOW the proper cold line in the expansion tank after driving 3 hours on the highway. NOTHING on the ground (left newspaper under engine all night), no coolant in the oil, nothing coming out of the overflow tube on the tank.

Anything I should be worried about?

Ritchie
83 300sd 125K kms
92 VW jetta diesel 180K kms
1971 DB 990 diesel tractor 52 hp hour meter shot, runs great!