Under coating

Anonymous-0 · Feb 27, 2013

Bought a used pickup that I use to pull a goose neck tractor trailer. It is 1 year old and just has "specks" of rust in different places underneath, maybe from gravel chips. If I have it undercoated will it keep rusting? Or should I just leave it and keep it clean as possible?

showcrop · Feb 27, 2013

I wouldn't get it undercoated, it will trap moisture. I would lie under it and study the bottom edges of sheet metal to see where wet dust or MUD is hiding. there are a lot of little places where it can sit and rust from inside. Find these places drill holes and clean out with air or water. When clean spray inside with WD-40, give it a couple hours to penetrate, then spray with aerosol chain lube which goes on thin then sets up to protect. Lift the rubber weather strip at the bottoms of the doors and you will see rust where the outer skin laps over the inner. scrape off the loose paint and rust with a screwdriver so that fairly clean metal is exposed. Spray with WD-40. Give it a day to penetrate then spray with the chain lube

kylemorley · Feb 27, 2013

There are thin film coatings, basically just a very high grade of
creeping, clinging oil, but not much heavier than WD40 like
CorrosionX, that I like because they can be easily touched up, and
are thin enough that they won't trap moisture or hide corrosion,
but tough enough that they last a while.

sflem849 · Feb 28, 2013

(quoted from post at 16:59:58 02/27/13) There are thin film coatings, basically just a very high grade of
creeping, clinging oil, but not much heavier than WD40 like
CorrosionX, that I like because they can be easily touched up, and
are thin enough that they won't trap moisture or hide corrosion,
but tough enough that they last a while.

I have heard Fluid Film works well for that.

David G · Mar 1, 2013

Just underbody wash it regularly.

showcrop · Mar 1, 2013

(quoted from post at 09:55:53 03/01/13) Just underbody wash it regularly.

Yeah, I have a friend that was washing his newest plow truck carefully after every storm. He noticed that it was getting soft under the rear window. He had a friend in the auto body business check it out. The friend told him to scrap it, too much work needed. His under body washing was pushing the salt deeper into cavities. The truck was five years old.

Mike M · Mar 1, 2013

The best looking old vechicles here in Ohio have had regular oil spraying done to them.

Under coating

Anonymous-0

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showcrop

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kylemorley

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sflem849

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David G

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showcrop

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Mike M

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