When I first got my 350sd after reading the overheating horror stories.I installed a new clutch fan,waterpump and thermostat.I also installed aftermarket high performance a/c fans and installed MBZ antifreeze.My 350sd never gets hot,I think in the long run it was money well spent.Good luck Johnny

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85 300sd SOLD ,85 745i,95 740i,1972 Suburban,1938 International