Was the rad near full when you put it in? If the rad is low the sealer will lay on top of the tubes & plug them up. I have used stop leaks ,mostly Bars leaks, for 60 years & never had a problem with it.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne Super In the Gallery Forum
