Be aware that cleaning an old radiator is risky- - - - -sometimes you dislodge the crud that's plugging up pinhole leaks, particularly if yours is a low-pressure or no-pressure system. There are two basic types of radiator flush, strong detergents that remove dirt and grease, and mild acids that dissolve lime and rust deposits.
Your best bet is to find a radiator shop that's been in business for at least a couple of generations, and ask the gray-haired old man in the shop to do a boil-out, flush, and leak check. The young guys all want to do a recore, or replace that good old copper radiator with a piece of aluminum junk!
Jerry
Last edited by Hotrod Lincoln; 03/13/2010 11:48 PM.
