Rust undercoating too late for an '05 SUV? - Team Camaro Tech
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post #1 of 6 (permalink) Old Jun 4th, 12, 08:09 PM Thread Starter
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Join Date: Oct 2006
Location: Canada
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Rust undercoating too late for an '05 SUV?

Just changed the oil on the '05 family SUV...and while underneath the vehicle, noticed that there was a fair bit of rust starting...doing its usual thing...eating!

So, was wondering if I should get the thing rust coated, with that heavy oil procedure that they do...or will it just be a waste of money?

Have owned the SUV for three years now, and I guess its seen three years of winter driving out of the seven. I believe that it came with a factory undercoat, but can't see that lasting more than one season.

Basic question:
Do you think it's too late now to get it anti rust undercoated, or just let nature do its thing? The wifey and I are arm wrestling this issue right now!

capt

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post #2 of 6 (permalink) Old Jun 5th, 12, 03:51 PM Thread Starter
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Re: Rust undercoating too late for an '05 SUV?

No suggestions/ideas?


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post #3 of 6 (permalink) Old Jun 5th, 12, 07:35 PM
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Lee
 
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Re: Rust undercoating too late for an '05 SUV?

Well, you need to neutralize or remove the rust first otherwise it will just continue to do its thing. Not sure if a rust proofer or sealant will do that for you. You need to check the product out and see what it says. If it's just surface rust then you might be able to sand it off, prime it and then get it rust proofed but if its into the metal I would say just let the vehicle be eaten up unless you want/need to keep the vehicle for a long time. Northern cars just live a hard life, no getting around it.
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post #4 of 6 (permalink) Old Jun 5th, 12, 08:15 PM Thread Starter
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Re: Rust undercoating too late for an '05 SUV?

Thanks for the feedback, Lee. Good points.

capt

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post #5 of 6 (permalink) Old Jun 6th, 12, 06:07 AM
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Phil McCullough
 
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Location: rural, Urbana, Ohio
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Re: Rust undercoating too late for an '05 SUV?

capt.The best "luck I've had with rust "fixin" on underbody parts is with rust converter and paint (rust oleum if your not going to restore or try to use other paint over it works well but dries slow) be sure and follow label directions. I have used Permatex convertor and found it to work well, but use gloves (Latex) when you work with it, it stains skin and doesn't wash off readily. Etching primer then paint on non rusty surfaces will keep it from the red scourge. A little work (get it up in the air) will assure preservation. This method is less work and works well for me. PRMc
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post #6 of 6 (permalink) Old Jun 7th, 12, 01:00 PM
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Russ
 
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Re: Rust undercoating too late for an '05 SUV?

It may be worth your while if not too far gone. Some places that "rust proof" do little good and don't know how to treat. Undercoat as I remember it is a sound deadener and does just that, does not prevent rust. Many will get brittle over time and crack and let water penetrate. At this point you would probably be best served by a more thin penetrant and light coating, something along the lines of cosmoline or a mix of it with a penetrant. If done right it's a messy job - besides spraying the underside you need to get over wheel arches, inside doors and quarters, fenders, trunk lid, seams on panels, all the usual rot areas. Personally I'd get a cheap sprayer from HF and try out/experiment a few things myself, see how it looks a few months later, rather than try the rust converters and painting. Can't do any harm if the rust is already too advanced.
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