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Best epoxy for small pin hole in aluminum exchanger...
Has anyone had any luck with an epoxy that works on aluminum exchangers? Not interested in peoples opinion about how this should or should not be done because I do need to nurse this through to warmer weather. I've already tried a product Cotronics RK454. Spoke to the engineer at the company and said they've had great success for my type of repair as well as automotive type of cast aluminum repairs - regarding both high heat, pressurized fluid behind the repair and constantly heating and cooling where the repair is located. But it didn't work even after scuffing up the aluminum, wiping down w/denatured alcohol and allowing a 24 hr. cure time.
I only have a small pin hole - placed a small 6" X 6"X 2" pan under it that requires draining about every 6 hours depending on ODT. Would love to find something with a faster cure time than 24 hrs. due to the extreme cold here in NJ...