[Karl Bebout]

Mando, I didn't use any sort of cleaner before I dried out my cooling system. The block had very recently been tanked and the radiator was less than 6 months old. Too late now, I'm not going to drain, flush, and dry but rather hope its all good. I can't speculate one way or the other so I'd just tell you to do what makes you comfortable with the project. I'd never given scaling a thought, since everything was so new, but now you've but the bug in my ear.....Thanks a lot! ha.