In Reply to: Ain`t never seen such! posted by 49er swGA on June 01, 2018 at 18:09:32:
Hell, I'm 73, age of my tractor. A little rust in my bores but still kickin'
You might want to go to Wally World, Yep Walmart. THermocure radiator flush. It's made by EvapoRust. Will get the rust out. But.... it will open any pinholes into bolt holes in any weak areas, elbows, freeze plugs etc. Crap it loosens and the color of the crap that comes out will scare a brave man. $18 a gallon.
I was skeptical but....
Follow the directions. Don't fabricobble. I ran it through a Ford 59AB flathead V8 in a Gerlinger forklift. It ate a couple of freeze plugs but when all was said and done temps went from a quick 210+ to a steady 185. Your results may vary.
.....or there is Cascade powder, Red Devil lye or Drano. Your choice.