Originally Posted by
n8secstangg
you should never use any sealant on them...the only thing i have had to do is put some of that aluminum radiator stop leak in the radiator to get the coolant passages to seal, 150 passes 0f 30#'s of boost and they were fine
Was told to do the same but did not and I am having no issues. If you do use the stuff flush the radiator quickly afterwards so you do not plug it. And no spray on the gaskets either.