Rust Expert Needed

dcoop

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Original poster
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Joined
Mar 29, 2020
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71
Location
arkansas
I figured this site would be the best to answer this about rust on the frame. This is on my 6yr old truck I bought new and I don't live in the rust belt. This is the only place that looks like this. The other side looks good including the top, bottom and inside. Thought about a good sanding then some primer then paint. If I'm not on the right track to fix this, I would like to get the right way to fix it. Ive never dealt with rust on a vehicle.

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Thanks. That's what I was thinking. I usually use etching primer on bare metal then a good coat of Krylon. Never had a frame do that.
 
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Id be more worried about the tread depth of the tires lol

Funny you say that. I knew my frame was getting a little rust on it. Then when I went out today to take a picture of my tire size to start tire shopping the rust problem hit me again.
 
With that sort of rust you could probably get away with a quick brushing to just to loosen any dirt that could be sticking to the metal, clean with soap and water then use rustoleum rust converter paint and if you want top coat with regular rustoleum after a couple days of the converter curing it should last for a really long time. The correct way is to go down to bare metal, but I don't see any scale forming it looks like surface rust.
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So...my 2-cents.... I see that you are in Arkansas (One of my very favorite places!) so you don't get the road salt like we do up here in Indiana and so it's more unlikely for you to have bad rust. BUT, when I got my '01 TJ the frame looked perfect and I mean perfect. I crawled under it before I bought it and tapped on the frame looking for bad spots and couldn't find any. Then when I removed the factory skid-plate I found that the frame was rotted out completely where the skid-plate mounts (fixed with Safety-cap.) So my recommendation is that you also get hold of a borescope and inspect the inside of the frame. You might have a nasty surprise lurking in there. Also, if you haven't done it, I'd drill the recommended drain holes in the bottom of the frame. Good luck fighting the rust.