Everyone feel free to throw something at me...How do I fill the radiator? 71 vette with manual tranmission and no ac. It has an aluminum radiator with the metal expansion tank. How do I add coolant for the first time? I'm guessing that you take the upper radiator hoes off and fill the radiator as much as you can, add to the proper level in the expansion tank and then add more as necessary. Am I close? Way off? Completely insane?