Originally Posted by boneheaddoctor

I will lay odds you have solder bloom in your radiator that a citric acid flush will cure.....it fixed mine....

I have about 8 lbs of this I am going to package in 2.2 pound ( one kilo) containers...and offer to a couple members here soon.

Its food grade Citric acid..... I bought 10 lbs of it in a bulk purchase, the rest is surplus to me.....it does work...

Before you recore you may want to try this first.