Painting rusty car underbody?
The chassis of my 2001 S10 is noticeably rusty. The control arms, axle, driveshaft, and differential, et al, are too. But the chassis is what I notice the most. The floor pans look fine. The entire underbody isn't rusted out, it's just the other parts I mentioned.
My question is, what is the best method for correcting this? I'd like to selectively paint things with some kind of black paint. Rust-o-leum? Some kind of rhino bed liner stuff? Something else?
What would be the best way to prep the surface? I don't want to dip my entire truck in acid to rid it of rust before painting... So if I wire brushed it and painted over some remaining rust in select areas, would that do more harm than good? Would I be locking in rust and making it worse?
haha to first answer. I hear ya man : (
What if I just want it to APPEAR to look better though? Like, I'm talking a Joan Rivers underbody paint job for my truck.
Here goes Joan Rivers, take the truck and pressure wash the underside as best you can at the car wash to knock off the loose stuff. Get about a half dozen cans of semi-gloss black spray paint. The next day after the bath (so it's dry) take the paint and spray the rusty areas and wheel wells. Don't use an undercoating as it will build up and can throw off the balance of the drive-shaft. Just be careful with your aim to keep it off areas you don't want it on (brakes, wheels, paint etc). You may have to do this periodically as the rust shows back up.
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