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Old 03-22-2013, 01:19 PM
 
Location: Ontario, NY
2,710 posts, read 6,216,765 times
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I've never been very good at taking care of my car. It has scruffs and scratches all over it and I really don't care. but no paint is missing, so there no rust on the topside of the car. But the other day while driving to work, a tractor trailer kicked up / dropped gravel as it passed me going the opposite direction and a stone hit the hood with enough force to make a small dent in the hood and damage the paint. It's going to rust if I don't protect it. If i get some clear coat paint to cover it, will it prevent rust from forming?

Last edited by TechGromit; 03-22-2013 at 01:36 PM..
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Old 03-22-2013, 01:30 PM
 
Location: San Antonio, TX USA
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Yes, bare metal will eventually rust
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Old 03-22-2013, 01:31 PM
 
Location: Northern MN
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Their is already rust forming in this chip and in all of the other small road chips all over your rocker panels and front end.

How aggressive the rust is depends on the rust proofing, undercoating and if you wash and wax it regularly.

If you use a rattle can of clear-coat and DIY that spot it will not mach the rest of the vehicle.
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Old 03-22-2013, 01:39 PM
 
Location: Funkotron, MA
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If you leave it as-is, it will start to rust.

If you can properly apply clear coat to it (might need to add some primer first?), it'll help keep air and water away from the metal and prevent rust form forming.
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Old 03-22-2013, 05:31 PM
 
Location: Houston, TX
2,052 posts, read 4,581,981 times
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Did it actually chip down to bare metal, or just to the (probably) gray primer? Most rock chips just chip away the outer layer of paint, and if you get a bottle of touch up paint from the dealer or auto parts store and dab it over the spot on top of the primer, you can probably keep it from rusting. I've done this on all of my cars and never had a problem with surface rust.

Even if it did damage the primer, there are touch up primers that you can apply first, then follow up with the touch up paint. I've used a hole punch to make a hole in a piece of paper, center it on the damaged spot, painted it (lightly) with primer, and then touched up the spot with the brush on touch up paint. Might not look 100% perfect, but at least it probably won't rust. Take a look at the auto paint supplies at your local auto parts store.

Good luck!
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Old 03-22-2013, 05:45 PM
 
10,522 posts, read 15,567,026 times
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trbstang got it. And no, clear coat by itself has no rust inhibition feature in it. There are rust inhibitors for that. Before you apply any touches to the dent though, get some denaturate and sand paper. 800 grit. Roughen the area carefully not to go all the way through primer; wipe off well with denaturate; then apply whatever you want to apply.
None of mine, but you should be more nice to your car. Cars feel "don't care" attitudes.
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Old 03-22-2013, 06:42 PM
 
Location: East of Seattle since 1992, originally from SF Bay Area
29,750 posts, read 54,373,866 times
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Quote:
Originally Posted by ukrkoz View Post
None of mine, but you should be more nice to your car. Cars feel "don't care" attitudes.
True, never let it hear you talk about trading it in or it will be a constant parade of problems that have to be fixed and you end up trading it in quick before something else breaks.

Just dab on a tiny bit of the touch up paint that comes in a small bottle with brush on the cap. It won't look great but will protect it from rust. If you really worried about every nick and scratch, you would never drive it. The best paint and several coats of clear are no match for a flying rock.
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