I will have a product out soon for the cooling system. It is patented and trademarked, been at it for 3 years. It will go in line in your supply heater hose line, and filter out all the junk keeping you from a plugged heater core. first one like this to market. completely cleanable with a stainless steel screen. It has 2 ball valves one on each end, to shut off the lines while cleaning it. I have 1000 coming from a manufacturer. It's called KOOL KLEAN. here is a pic. those are not the colors, just for cad separation.