Review on Bars Leaks 1194 Grey Radiator by Bob Maldonado

There was a small leak on my car that wasn't visible. I did a full flush and carefully bled the air out of the system. I haven't had any problems with my machine since using it. I think the main reason why heater cores/radiators get clogged is that there are air bubbles in the system. If the retaining sealant gets into an air pocket, it acts like a leak and hardens. When using this product, be sure to remove the air properly.