KBS Coatings 75100 Cavity Coater Aerosol, 17.5 Fluid_Ounces

Applies liquid but leaves behind a film that stays put and gives good protection. I'd have to use it for years to know the long-term quality of protection, but the application process was fast and easy, and I fully expect it to work as advertised.

Works great. It cover the metal and inside doors well and dries to a waxy finish. Yes, it is a thin coat, so you will have to reapply every few years. Nothing lasts forever and still flows well into all the cracks and crevices. Not sure why other uses did not like it, but worked well on 3 of my cars with no rust showing after a salty winter. Best to apply a rubberized undercoating, then utilize this spray for cracks, crevices, seams, edges, and inside doors.

The spray wand is well made and worked good. Only problem was the wand's connection at the plastic tip (at the can) came apart about ten times using two cans.Time will tell but the material appears to flow nicely into the thin opening near spot welds.Very expensive for a metal can with cheap industrial raw materials. If used in the few places it should be used on (inside rockers, door pinch welds, cab corners or spot weld panels) its probably worth it. Given the price of new trucks, the brine spray used everywhere and the various types of salts used now a days.

Used this stuff for years. It coats very well and lasts for years. Did a restoration 8 years ago and used it on the rockers, after the vehicle was hit at the door/rocker area, I removed the rocker and the coating was still doing it's job great. The coverage was great and there was absolutely no rust, rot or oxidation of any sort. This was a Chevy truck that was daily driven in all weather. Highly recommended KBS , I use it with every car that rolls out of the shop.

coated a piece of steel and left outside in the weather for a year. No rust where i sprayed kbs. The rest of the steel was total rust. So rust proofing in automotive doors ,quarter panels,fenders that is'nt in direct weather is awesome.

This is effective rust-proofing for both new and older cars. The jet shoots straight for about three feet, so it is easy to hit hard-to-reach places. This stuff is a bit messy when the excess drips to the floor, but the dried coating stuck to the car is thick, adherent, and does not smear or transfer to skin or clothes.

It's spay oil and wax mixed together. After a while the oil evaporates and leaves the wax. The spray oil will break down oil soluble products though like other Rust Proofing products so be knowledgeable of that.You have to apply this stuff first and then remove the spray oil that drips out of the frame. After the spray oil is gone ,than you apply undercoating. If you apply undercoating first, the spay oil will break down the undercoating.

The KBS coating worked as described.