are these things on a thermostat or are they supposed to be on all the time? we found it hot recently when the weather was 70 degrees. can it be evaporating m ww fluid away?

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I don't think it's an electric heater. I think there's a coolant loop from the auxiliary pump in the washer fluid tank.

Sixto
87 300SDL

then, no worries. thanks much.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

This might have something to do with mine constantly clogging!

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82 300D....went to MB heaven
90 350 SDL....excercising con rods