[toolboxchev]

Imho, do not scrap out your old brass and copper radiators. The tanks on the sides are what is valuable. I had a local guy rebuild mine with a heavy duty forklift core for a decent price.

Cools like a dream! I would not use a aluminum unit on these old trucks unless its a show piece. You cannot clean the insides of them with the radiator flushs on the market today. EPA had made most radiator flushs reduce the harmful environmental chemical to using Sodium Citrate as the main ingredient.

In the days when these vehicles where developed we used a chemical called Oxalic Acid which is harmless to brass, copper, and cast iron. It eats red oxide, which is rust!