Not sure what you mean by working at max
just want to get the best one for my system.
Theoretically the highter the pressure the higher the boiling point of water.
So a higher rad cap would likely keep it a little longer to attain the higher pressure. Guess the only good thing would be if she redlines with a 140 the boiling point would be higher than w a 120 thereby halping the coolant not to boil but what does the boiling point have to do with it?
Its the temperature itself that can hurt the heads & gasket
so it shouldn't matter if its boiling or not accept at a boil there is a liquid & gas state...now don't know if thats a factor as a gas is air & air will lessen the capacity of the cooling system which is already stresed.
Seems like it really doesn't matter??????
