For awhile now, I've been trying to find a good underbody spray that works well and at the same time lasts. I've used a number of sprays, like 3m, bondo, duplex, (many more) and they were all ineffective. Now I cant stand rust, and I mean anywhere, even if it's not seen so you can imagine how much I hate it when I try to protect something and it doesn't work.
Soo when I was looking through the *** website and realized that Spectrum is also able to be used as an underbody liner, I whipped out my credit card and got 3 gallons.
here's the truck
now I applied this in two ways, I brushed it on, and then I also used a spray gun. *IF SPRAYING, BUY THE SPRAY GUN THAT'S ON *** WEBSITE!!* I decided to buy one from harbor freight and it worked, but it was awkward as hell and I couldn't use it in all the places I wanted to.
spray gun
pics of before
Just before applying it I brushed all the surfaces off with a wire brush and blew it off with an airhose.
(not finished)
back wheel well
I'm still not finished, and if you see a difference in the color its because some of it was still drying.
I would highly recommend using spectrum, it's very durable (tried to scrape and brush it off with a wire brush and it didn't even scratch it ). and it also offers sound deadening as well.
I'll post some more pics when I'm done lining the whole underbody.