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Recommend me an auto rust preventative / sealant

Posted on 3/21/16 at 8:19 pm
Posted by Brightside Bengal
Old Metairie
Member since Sep 2007
3882 posts
Posted on 3/21/16 at 8:19 pm
I recently bought a 2011 vehicle and had an inspection at the local dealership. The vehicle had previously been owned up north and has some rust on the underbody, but nothing major or affecting moving parts. My guy at the dealership recommended that I just get a wire brush and knock off some of the rust and then spray it with a sealant product.

I forgot to get a specific brand name from him, and after some googling, I'm still not really sure what to buy. Could the OT guide me to a specific product for this application?
Posted by windshieldman
Member since Nov 2012
12818 posts
Posted on 3/21/16 at 8:34 pm to
I know of some stuff that will turn everything gray it touches. I assume on underbody none at all will be showing? It's in spray can, I'll go look in my truck, can't remember what it's called.
Posted by windshieldman
Member since Nov 2012
12818 posts
Posted on 3/21/16 at 8:36 pm to
Rustoleum- self etching primer is what I was thinking of

Eta: After reading post below maybe you shouldn't use what I said.
This post was edited on 3/21/16 at 8:41 pm
Posted by Warfarer
Dothan, AL
Member since May 2010
12124 posts
Posted on 3/21/16 at 8:39 pm to
What is it on and what color are you considering? If it is on the frame, then I would say use some POR 15. Probably just get a sample bottle, it is bad arse stuff and goes along way.

Starter kit 21 bucks and damn near bulletproof.

Posted by EA6B
TX
Member since Dec 2012
14754 posts
Posted on 3/21/16 at 8:57 pm to
Knock off the loose stuff with a wire brush as suggested and spray it with Rustoleum "Rust-reformer" it will chemically neutralize the oxidation process, then spray it with Rustolem "undercoating" spray. Used both on my old Jeeps with great results.
Posted by Bleudawg
Middle Ga.
Member since Jun 2014
386 posts
Posted on 3/21/16 at 9:16 pm to
Only luck I ever had with the older jeeps was a sawzaw. That non treated stuff just gets the cancer to deep to treat.
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