This is a question that I'm sure has been asked before and puts me firmly in the rookies. I had the hood up and happened to squeeze the top radiator hose and noticed the water moving in and out of the overflow. each time i applied pressure to the hose either air or water was moving into and out of the overflow. I don't remember ever having noticed this before. Is this normal or something failing to stop this , like a bad cap or ?? Thanks for reading this and any help is very much appreciated . Gary r
94 olds cutlass supreme 3.1