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2500HD/3500 HD Trucks & Drivetrain Discussion Forum for the 2001 & newer 2500HD/3500 Trucks, Transmissions & Drivetrain

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Old 05-21-2017, 02:10 PM
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gary_lucas gary_lucas is offline
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Join Date: May 2012
Location: Langley
Posts: 285
Default Frame rust

Hi all,

Given that I've sunk a giant pile of cash into keeping my truck on the road for another decade I'm now getting nervous about the state of the frame.

I've got some rust above the wheel wells on the body, both sides. Ugly but I can deal with that.

Frame rust etc, to me it looks like surface rust. Still needs dealing but just thinking of best way to approach it.

Here's some pictures: https://goo.gl/photos/1TcoZDgJVL7XXTnd8

You can see the fuel tank strap has busted, I'll replace that.

My current plan is to get a pressure washer underneath and try to blast out what I can (without trashing the brake lines etc) then do a quick wire brush underneath where i can access... Then spray on a coat of rust converter.

In the fall I'm going to pull the bed off the truck so I can cut the bad sections of wheel well off and weld in patch panels (heh... wish me luck). While the bed is off I'm going to do a proper job and wire wheel / rust convert / prime and paint all the surfaces.

Thoughts? Process? Does this look normal and not dangerous to most?

Much appreciated!

Gary Lucas
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  #2  
Old 05-21-2017, 05:57 PM
convert2diesel convert2diesel is offline
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Join Date: Apr 2004
Location: Ottawa, Ontario
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Quote:
Originally Posted by gary_lucas View Post
Hi all,

Thoughts? Process? Does this look normal and not dangerous to most?

Much appreciated!

Gary Lucas
That's not rust, it's patina .

Suggest you peruse the site at "eastwood.com". They specialize in automotive coatings and preparation chemicals. Have used them for years with great success. Living in the "rust belt" in Canada, am always chasing rust.

Bill
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  #3  
Old 05-22-2017, 02:47 PM
tufcj tufcj is offline
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Join Date: Jun 2007
Location: Watkins, CO
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Default

Check out POR15 products (paint over rust). You can brush it on, or thin and spray.

Bob
tufcj
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  #4  
Old 08-20-2017, 12:24 PM
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More Power More Power is offline
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Join Date: Feb 2000
Location: Big Sky Country
Posts: 10,053
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Quote:
Originally Posted by gary_lucas View Post
Hi all,

Given that I've sunk a giant pile of cash into keeping my truck on the road for another decade I'm now getting nervous about the state of the frame.

I've got some rust above the wheel wells on the body, both sides. Ugly but I can deal with that.

Frame rust etc, to me it looks like surface rust. Still needs dealing but just thinking of best way to approach it.

Here's some pictures: https://goo.gl/photos/1TcoZDgJVL7XXTnd8

You can see the fuel tank strap has busted, I'll replace that.

My current plan is to get a pressure washer underneath and try to blast out what I can (without trashing the brake lines etc) then do a quick wire brush underneath where i can access... Then spray on a coat of rust converter.

In the fall I'm going to pull the bed off the truck so I can cut the bad sections of wheel well off and weld in patch panels (heh... wish me luck). While the bed is off I'm going to do a proper job and wire wheel / rust convert / prime and paint all the surfaces.

Thoughts? Process? Does this look normal and not dangerous to most?

Much appreciated!

Gary Lucas
A good powerwash would be a good start, then once it has had a chance to completely dry... Locate a spray bottle - like an Armoral bottle or some other that has an adjustable position nozzle. Create a mixture of 50% used motor oil (from your diesel truck - the blacker the better) and a solvent that can evaporate (I use diesel fuel). Then spray the rusty areas on your truck's frame and suspension. I try to keep it off any rubber components (i.e. brake hoses/rotors, motor mounts, body mounts, etc.) If it drips you're using way too much. You may need to retreat the affected areas once per year, but the oil will prevent further rusting and the black sooty oil film will look like undercoating the day after treatment. Try it on a remote location as a test. I am always amazed at how well it works. So easy, so cheap, and so effective.

I learned about this trick many years ago while talking to an upper midwest fleet mechanic. He told me they treated beneath all of their vehicles once per year to keep them from melting into the ground due to the gawd-awful road de-icer. GM's chassis, drive-train and body engineers should have to look at your photos every single day...

Last edited by More Power; 08-20-2017 at 01:35 PM.
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