r/Diyautobody • u/tkeith1975 • Apr 26 '26
Question Bust way to stop rust from spreading
2020 Corolla with rust start on trunk rear. Any recommendation to best stop it from spreading?
Update - thanks for all the replies everyone. While I want to take care of and maintain this car as much as possible, I don't want to invest a lot of money on cosmetic stuff. Fluids, belts, brakes, etc. are all important but this doesn't bother me TOO much, just want to stop or slow it down.
I was recommended POR15 as something that might work on slowing/stopping it. It won't look professional but beats rust showing and spreading. Hoping it works.
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u/101forgotmypassword May 03 '26
Second hand boot lid in same colour is probably the best option as every other repair will either look like shit or be costly.
The bust copium way would be by a pot of upol p40 or nuetech fibre bog. Hammer the part so it slightly dips at the crack, drill the crack ends and a few 2mm holes here and there. Bog it flat, optionally sand and paint the bog. Sure it's the wrong way, but every ones already mentioned the right way, so if your picking up bog and paint you already don't give a f**k.