Quote:
Originally Posted by 312necro213
Daily drive, if you read the back of the can on POR-15, it does say it will seal in the rust, but what you said is wrong, rust forms from a reaction with oxygen, POR-15 seals in rust thus sealing out Oxygen, therefor the rust is still there but without Oxygen for the metal to react with the rust cannot advance any further, the only reason they even have you remove the rust is so you get better adhesion. POR-15 will be your best bet with rust prevention.
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There's theory, and there's reality. The theory part is on the back of the can, yes. But the reality is any sealer will eventually chip. Usually in places where there was the most rust before. Once water gets in behind the pretty sealer, it will continue rusting either until your metal part is rusted through, or until the pretty sealer falls off in big chunks and you finally notice the horrible rusting below.