Ran across this video today. He uses a air powered gun to flush the heater core. I found it very interesting. I might have to order one of these just to add to my collection of things that are nice to have but not completely necessary.
OTC 6043 Blast-Vac Multipurpose Cleaning Gun https://www.amazon.com/dp/B000F5ECRW/?tag=wranglerorg-20
OTC 6043 Blast-Vac Multipurpose Cleaning Gun https://www.amazon.com/dp/B000F5ECRW/?tag=wranglerorg-20
