U-POLACID#8 Acid Etch Primer, Automotive Etching Primer Spray Paint For Bare Metals, Durable Against Rust & Corrosion, Easy-To-Use, Gray, 13 OZ

Is it any better then any other etching primer? I dont know but required when doing a spray in Raptor liner to cover bare metal

exceeded my expectations!

Holds paint to bare metal great only thing is i found for 10.00 less down the street at Au tozone . Amazon is way too expensive for everything im finding . In the end i saved 30.00 on 3 more cans and didn't need to wait half a week while it was shipped all over the world.

I've been using U-Pol for years and I've been very happy with everything I've used.

Happy with the UPol products but cheaper in store.

Works great on diamond plate, before I raptor lined my homemade camper trailer you can really cratch at the primer once dried and it seems to really get a good bite to the aluminum. I did run out of cans and opted to buy a can of home depots self etching auto primer and you for sure would have to rough up and clean the surface as that does not at all self etch compared to this (speaking about alm diamond plate, I did use Home Depot’s when priming my Tahoe to raptor line and that did work great in that application but for aluminum I’d go with this.) but I was on a time frame but all in all seems to be a 5 star item tad pricey but if it works and I only have to do it once.. I’m happy with that. If I were doing anything other then aluminum I’d probably go with Home Depot as it has worked on plastic wood and everything else I’ve put it on and is half price.

I used this to prime some spots where I sanded through to metal and it never caused any weird reactions with anything I sprayed over it. I sprayed U-Pol High Build primer over this and also a regular automotive urethane base directly over it with no issues.

It worked as described