I have a 2004 Toyota Corolla with 105600 miles on it that I bought new and it has been a great car. I plan on keeping it for a long while longer and can’t afford a new/newer car right now. It is just starting to Rust by the rear wheels near the bumper on both sides and down on the rocker panel at the rear wheels as well. I saw an 06 and a 04 Corolla on a used car lot the other day with rust in the same spots and a lot worse and they had twice as many miles on them . The 04 had holes the size of softball. The there is also a Corolla that’s probably an 05 or 06 by the grill in the parking lot where I work in worse shape I as well. Live in Iowa and use salt on roads in winter. I think mine might have been help by having to have had body work done a couple times after the city Garbage truck backed into my car while it was parked and me about four years later not realizing I was dinging my car up whit the butt end of my ice scraper trying to get at at least an inch and a half of ice off after work during an ice storm. ( those are separate stories)
My question is that since I am planning on keeping the car longer and it gets regular maintenance by a trusted mechanic Do products like POR15 really work to stop rust from getting worse if I put it on the undersideinside of the rear wheels and riocker panels?