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What can u treat the underneath of your car to prevent rust ?

This is a discussion on What can u treat the underneath of your car to prevent rust ? within the General Help forums, part of the LSx Technical Help Section category; My car has no rust all looks good but is there something I could use to prevent rust ?...

  1. #1
    Ebaaaaaaaaa Speedy_Gonzales's Avatar
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    What can u treat the underneath of your car with to prevent rust ?

    My car has no rust all looks good but is there something I could use to prevent rust ?
    Last edited by Speedy_Gonzales; 11-05-2007 at 06:06 PM.

  2. #2
    Member dlmeadows's Avatar
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    metallic pewter
    2001 WS.6 Trans Am

    autozone has a rubberized undercoating that you can spray on. works just like spray paint and costs about 4 bucks a can

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    Cookie Monster LukesSpeedShop's Avatar
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    Navy Blue Metallic
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    Im living up here in Northern New York, where 2 year old cars have rust holes....

    The snow plow guy I know sprays everything he owns with transmission fluid out of a cheap paint gun bought at harbor freight. seriously this works wonders....his plow truck is a '99 chevy and the factory black paint is still there instead of rust.

    Its not everyones favorite thing to spray tranny fluid under their car, but it definatly works

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    Senior Member 35thAnniZ28's Avatar
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    ^great input

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    Veteran 0rion's Avatar
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    por15..expensive but nothing on the market will beat it.

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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Quote Originally Posted by 0rion View Post
    por15..expensive but nothing on the market will beat it.
    X-100!! That stuff is the bomb!

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    Ebaaaaaaaaa Speedy_Gonzales's Avatar
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    Quote Originally Posted by 0rion View Post
    por15..expensive but nothing on the market will beat it.
    cost, where to purchase, how often to use it

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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Quote Originally Posted by SpeedAddict38 View Post
    cost, where to purchase, how often to use it
    Its kind of expensive but for something that's HAMMER TOUGH, it's worth it. You only coat it once. google.com it

  9. #9
    Ebaaaaaaaaa Speedy_Gonzales's Avatar
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    do u have to do the 3 step system if u have no rust ?

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    Life in the Fast lane sunsetorangess's Avatar
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    Quote Originally Posted by dlmeadows View Post
    autozone has a rubberized undercoating that you can spray on. works just like spray paint and costs about 4 bucks a can
    I wasnt a big fan of this stuff, i picked up a few cans for my 91 and didnt do much for me. Just my op. thou
    J
    2001 SS, Its not the car its the Driver that matters....

  11. #11
    Member dlmeadows's Avatar
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    metallic pewter
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    Quote Originally Posted by sunsetorangess View Post
    I wasnt a big fan of this stuff, i picked up a few cans for my 91 and didnt do much for me. Just my op. thou
    J
    I had a couple of small surface rust spots on my floorboards. my car came from virginia, so i brushed it off with a die grinder and wire brush and applied the undercoating, no more problems. worked for me but around here there isn't that much snow anyway lol.

  12. #12
    Member ApexVIII's Avatar
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    as stated there is ruber coating, like what comes in some parts stock
    M6, Lid, Ported and Polished Throttle Body (By Me!), LT, Custom Catted Y, Electric Cutout, PHB, LCA13.21@108 with a 2.3 60'

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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Quote Originally Posted by SpeedAddict38 View Post
    do u have to do the 3 step system if u have no rust ?
    I am not sure as I was not the one who applied it. I have had it on my Chevelle now for 10 years and it is still glossy and rock hard.

  14. #14
    Member Since 1998 Mecinoid's Avatar
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    '98,'00 Bird '03, 14 Vets

    I used the rubberized stuff on a lot of my cars. It works great. However, you can't use the stuff over rust. You can get rust converter in a spray can for the rust. Much like Pors-15 but, at a fraction of the cost and just about as good expecially if you are going to undercoat it afterwards. Then you are sure you have treated the rust and have awaited 24hrs. you can spray the rubberized undercoating on that for a solid bond. If you don't clean and or use rust converter on any rust you see the rubberized undercoating stuff will just peal off. No big deal you just respray it if that happens.

    The plus with rubberized undercoating is it quiets down the vehicle noise and if used in well wheels the rocks and snow kicked up will not be as noisy. I used this stuff on my 350Z just to quiet down the pebble noise as the Japanese companies have great rust through protection but, do not undercoat with a material the will absorb the knocks of rocks and pebbles going down the road.

    I have also used the rubberized undercoating after clearancing my rear wheel wells on the Bird for larger tires. I love the stuff and it's cheap protection !!!

    Then there is another option..... After you treat the rust take it to a body shop. They will undercoat the whole underneath with a mastic(tar) type of product for $150-200. That stuff is thick and has been around for years. However, it's kind of a bitch if they get it on your exhausts. Have them watch out that they don't coat those.

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