I was on K6JFR's website looking at his section on Water Wetter. He describes assuming that his water to coolant ration should have been correct given that the car had been serviced at the dealer. He found it to be incorrect.

I have the same scenario. Car had it's 90K dealer service at 99K and coolant was changed. Think I will buy the little Prestone ratio tester and check it out.
Maybe the coolant to water ratio is too high, which would cause the engine to run slightly hotter than I was used to in the 124's.

Steve

Steve

Which stat will make the motor run warmer...my 617 seems to run much better at an elevated temperature..and which makes it run coolest

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1982 300DT *4-speed*// proper 617 donor for conversion // W126 big brakes // front wagon swaybar // european lights & bumpers // rear headrests // lumbar support // warning triangle // overdrive water pump pulley & 9 blade fan // Too many more to list Dark blue/ Palomino.

1983 300D euro no longer a 4 speed. . swap/parts carr