Engine temperatures
Engine temperatures
I should hope it stays cool at idle. AC or not. The discussion relates to an OM606 turbo in a heavy truck towing a trailer uphill. This generates massive heat. The factory fan system is excellent as long as the fan clutch hasn't lost its fluid. There is a larger pump and smaller pulley that help too. Discussed here:
https://clubgwagen.com/forum/viewtopic.p...28#p107653