Quote:
Originally Posted by ILUVMILS
The windshield washer nozzles are heated electrically, but the washer reservoir is heated by an exchanger with coolant flowing through it. It sounds as though it's allowing coolant into the washer bottle. You can replace it, or, bypass it, depending on your budget.
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Thanks for pointing that out, MB Master.
I always thought that metal coil in the washer tank is an electric heater like the ones we use to boil a cup of water. Now after looking at my 1991 300E, I see it is a hot coolant heater. It looks like it is made of stainless steel and it is a one-piece part (so should not leak easily). I do not see any joints within the washer reservoir.