I saw one of your videos that you talked about some dudes living by the beach and they used to sauce in the underside of their cars with anti rust lacquer but I want it to last for as long as possible so my idea is to buy a dremel and remove all the rust before applying this coating and then applying a thick layer of rust protection for underside of car, the stuff you usually find under a car. is this a good method what do you think
Remove? Don’t bother. Exercise in futility! Once rust starts, no stopping it. Best you can do is retard its ferocious progress. There are products for that, … industrial products: CorrosionPro Lube, CRC Heavy Duty, and LPS-3. These products work miracles on ships/boats, meat processing plants machinery et al, where corrosion reigns. There are other products, too, but I wouldn’t bother. Above three are most effective. I know, … I used to ship oilfield equipment across the oceans, on top of ships decks to different parts of the world. We just diluted these products with Varsol so it sprays easily, sprayed the equipment thoroughly and off onto the boat! Worked like a charm - heavy storms during a passage or not.
Anyway, … I, for example, use LPS-3 ( its food processing plant approved by EPA, so I presume, it’s not as toxic as the other two) on all my cars. It works perfectly on new and rusted metals. On rusted metals, it only does not work when rust is at the stage of flaking in a big, big chunks.
Aside: I also use LPS-3 as a lubricant: hinges ‘n such, latches, brake calliper pins, springs, all assorted bolts and nuts during reassembly of car assemblies, … but that’s me.
F.S.
my idea is to buy a dremel and remove all the rust
A dremel? All the rust? you'll be working on it for months.
I would just use a scraper to remove anything that's flaking off.
type "undercoating" into the our search box for more info.
