Hey guys,

have a couple of questions regarding my c200 1995.

I have just discovered my thermostat is knackered and am replacing it. Will running the car with a stuck open thermostat cause any performance or other issues?

Also, I have noted there is a small black knob by the OVP, numbered 1 - 9. It is labeled HFM MFM or something simular. I cant see as it is worn off. It looks like the EZL adjustment on older euro spec cars. Anyone know what it is?

josh