Dec 22, 2021 · I find it is great for areas that have surface corrosion already started, it seems to really slow down the progression. I use 3m cavity wax on new vehicles, or newly installed underside …

Jun 23, 2024 · One shop told me that I should just apply 3m Cavity Wax to the metal area behind the exterior section that is bubbling. I thought it might be a good idea to first apply Ospho rust converter …

Nov 4, 2017 · Used similar products (to 3m) from Kent's cavity protector to Rusfre cavity wax. Amsoil Mphd is a similar product (but better priced) to those, sprays and smells very similar. Goes from …

Dec 2, 2024 · The Transtar cavity wax is probably the best value. You can get an application kit for the Transtar stuff that will eliminate having to drill any holes. It has a 360 degree nozzle and extended …

Jun 18, 2024 · this is some thing i have thinking on for some time, getting cavity wax into hard to get at places. my son just bought a parts truck [86 dodge d150] the cab is totally rusted away over the …

Jan 12, 2022 · At the time, the only product I was aware of for this application was 3M Cavity Wax Plus, so I liberally coated them internally with the wax. (Picture is from my boroscope) I then learned about …

Nov 3, 2023 · Is there a group preference on cavity wax selection?

Jun 24, 2022 · I have the 3M cavity wax and wands all ready to go for the quarter panel, cowl and assorted voids. But won't use it until all paint/clear is done. Probably will spray it while waiting 2 …

Dec 20, 2015 · On restorations, when you are done with the paintwork on the vehicle's underside or similar areas it's a good idea as a last step to spray cavity wax into all the boxed areas and seams. …

Sep 13, 2019 · The cavity wax will seal the surface preventing moisture and oxygen from reaching the surface. As the wax doesn't harden it can work it's way into little crevasses and seal the metal. …