Originally Posted By: slomo
Put the old copper and brass radiator back in the car. The new aluminum jobs don't cool as well and don't last either, most are Chinese made. Run the old school green antifreeze. As others said make sure it's not a newer formula that's green.
Clutch fans are fine. They are on millions of vehicles with zero cooling issues. A shroud enhances it's performance dramatically, get one if you go this route.
Use some Prestone Super Flush then later add some water pump lube/anti corrosion in the final coolant fill. This stuff enhances the corrosion properties of the coolant.
The effectiveness of a copper and brass radiator are determined by things like depth, surface area, and fin density. If there was a small brass radiator and it was replaced by a big aluminum one, the temperature drop could be greater. Also, country of origin also depends on the model of radiator, you can get an all aluminum Fluidyne made in the USA, and you can get a premium all aluminum Koyo that was made in Japan, unlike the rest of Koyo's radiators.
