Reply to "POR15 inside coolant tanks?"

david3449Member

Muriatic acid sounds like the nuclear option. I have cleaned rusted fuel tanks with straight vinagar. In any case a good rinse and baking soda to stop the action.
I have used a product called "Red Coat" to seal fuel tanks. It is like pancake syrup. You have to rotate the part to coat all sides. Cures over night. O'reilly auto parts has it behind the counter , $25 a quart.
I have no idea how Red Coat stands up to hot water but it is an idea.
I do love POR-15 products and they cure from moisture so would not pour any left overs back in the can.

10/13/155:27 AM

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