Engine Cooling problem
1991 BMW 318 4 cyl Two Wheel Drive Manual 142000 miles
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my temperature gauge went to red and after filling with kettle and half of water it returned to normal.after driving for a while the temperature gauge flunctuates between middle and red all the time

Hi there,

If you are loosing coolant. you will need to get a system pressure test done, this will help locate any external leaks. have the thermostat changed and get the radiator cleaned & flow tested.

Mark (mhpautos)