OK. I was thinking about replacing the monovalve but know less about the heating system than I do about the rest of the car. (If that is possible.)

So, is that the main purpose of the monovalve? (Heat regulation, that is.) Does it do anything else?

Thanks a lot.

__________________
Growth for the sake of growth is the ideology of the cancer cell. -- Edward Abbey

1984 300SD: Hilda the veggie vundercar