Dave & Others,

Dave, Your report is appreciated. Mostly because of being conservative, (my old radiator tested okay) I have opted for a new radiator from Kitfox (in my continuing new engine install) and have a couple of questions.

Is it necessary to flush out my new Kitfox radiator? If so, is this something that should be done at a radiator shop or can I do this?

There is a threaded hole in one end of the radiator. What is this for?

Thanks much, Skot