[jwhotrod]

your radiator pushing fluid into the puke tank hot is doing what it should, allowing the expansion of the fluid getting hot a place to go. that is to get all the air out of the system and keep it out. If the radiator is transfering ok into the overflow tank and not puking out onto the ground dont refill it. once the system finds its level it does not need to be constantly topped off. the system in my 35 chevy has not been touched other than to check the level in the puke tank hot a couple of times, in over a year. Same as a new car.