Hi, we changed the radiator on my sons 65 Mustang, Its aluminum. My son says the car always run above the middle and high when idling for a while. I know the cooling system is working and we just replaced all the fluid. I looked for a larger radiator but did not find one that fits. Besides I already put the new one in. Is that just the way they run or is something wrong?
65 Mustang, 289.
65 Mustang, 289.