Rusty door help questions
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Senior User
Joined: Apr 2003
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Rusty door help questions
My truck is a '99 F150 extended cab. I'm in Ohio and have the typical door seam rusting. It is getting bad enough that I have 2 small bubbles showing on the exterior. What I would like to do is slow the rust as much as I can. I feel that the doors are too far gone to save. I have talked to several bodyshops and they will sandblast, prime and paint the interior door bottoms so they look nice and give me about a year or two duration until I am in the same boat again. I understand that the rust will not stop but I want to slow it. Questions:
1. Should I wire brush the loose and rust convert what is visible on the bottom inside of the door.
2. Should I do the above and somehow rust convert the interior of the door shell.
3. Should I do both of the above and also dump some oil into the door to help.
Any other thoughts. I am not concerned what the door bottoms look like on the interior. I just want to have the truck make it to 200K in a couple of years and not look like swiss cheese. Any thoughts and previous experience appreciated. Thanks
1. Should I wire brush the loose and rust convert what is visible on the bottom inside of the door.
2. Should I do the above and somehow rust convert the interior of the door shell.
3. Should I do both of the above and also dump some oil into the door to help.
Any other thoughts. I am not concerned what the door bottoms look like on the interior. I just want to have the truck make it to 200K in a couple of years and not look like swiss cheese. Any thoughts and previous experience appreciated. Thanks
Elder User
Joined: Apr 2004
Posts: 630
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From: Hedgesville WV
I think the best idea is to let the body shop do what they can do to totally remove the rust(sandblast, especially in the creases and tight corners) and repaint. A little oil on the inside isnt a bad idea. Once rust starts to get in an area its very hard to get rid of
Fleet Mechanic
Joined: Aug 2007
Posts: 1,815
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From: Piney Woods of East Texas
Have the body shop use a rust converter, then shoot an epoxy primer. This is about the only primer that will actually seal it well enough to keep the water out and stop rust. 2 coats then have them shoot a 2k primer over that to sand on before the color is applied.
Elder User
Joined: Jan 2007
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My biggest problem with the majority of the rust converters is that they simply don't work like they claim and the rust winds up coming back. Me personally I'd sandblast, then apply something like Rust Bullet, then use my primer over the top. Products like Rust Bullet and POR-15 are the only ones I've found that will actually prevent the rust from returning without having to cut out the old metal.
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Senior User
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I have concluded that going the body shop route is probably going to be a lot of money spent with no guarantee and maybe slightly longer before the rust is back. I have a small spot blaster I plan on using to get what I can on the door seam. At that point since it will be "clean metal" does a rust converter even apply. I still plan on dumping some inside the door since the rust is obviously coming from the inside out.
