Rust on the doors

[SledTL]

Kind of a random question to ask on here, but is there any way to fix rust on the doors of my truck. They are only very small spots on the edges of the doors. I don't want to bondo them because I don't know how to do any body work. Didn't know if you could like spray something or spray paint to basically keep it from spreading. It is on the inside, not even on the exterior so I guess you can't even see it unless you bend down and go hey this truck is 12 years old.

 

[indy_500]

You could paint or undercoat the insides of the doors otherwise take your door panel off and spray oil all over the inside of the door panel it will seep down into the crack. Spray it all over the rust area and it should stop it. Paint will cover it for sometime and rust through again. Oil will pretty much put it to a stop but you will still see it.

 

[mezz]

Sand the spots down, prime & paint & clear coat. You can get touch up paint & clear coat from auto store rather cheap, or you could pay a few bucks more & get the exact color match from the dealer. If the spots are on the inside of the lip of the door, you don't have to be too crazy about an exact match as your not going to see it until you open the door.-Mezz

 

[xcsp]

This wouldn't be a GM truck would it?

Is the area that you are seeing the corrosion along the bottom seam where the outer door skin wraps around the inner panel, like in the attached picture?

Mezz & Indy both have good ideas on how to slow it down from getting worse.

 

[SledTL]

This wouldn't be a GM truck would it?

Is the area that you are seeing the corrosion along the bottom seam where the outer door skin wraps around the inner panel, like in the attached picture?

Mezz & Indy both have good ideas on how to slow it down from getting worse.

No it's a ford sport trac, Indy will probably make some wise crack about how it's not a "truck" lol but anyways I might try to get some touch up paint cuz I Just don't want to see it. I'm one of those weird people who always has to have everything looking clean and like new.

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And yes it is kind of in that area in the picture and further down the door in a spot underneath the speaker kinda

 

[millertime]

Transmission oil works great from the inside as well.
My father did it to every car back in the 70's right after he brought a new car home. I don't ever remember the doors rusting.

 

[anonomoose]

If this is exposed to salt, oil won't stop it. You need to clean it up, and scrap off reasonably well, then get some bondo at wally world or auto parts and smooth it along there where the metal is rough....I have taken some aluminum foil or saran wrap to sort of smooth it out prior to setting up. Then sand it down smooth, put a good primer on it couple coats...sand again between then get a zip paint can and hit it several times. This will fix all the ills of a truck that has gone through many winters.

BTW...the oil in the door is a red neck fix. Works sorta but not really well. And do you want oil dripping out on your drive?

 

[SledTL]

If this is exposed to salt, oil won't stop it. You need to clean it up, and scrap off reasonably well, then get some bondo at wally world or auto parts and smooth it along there where the metal is rough....I have taken some aluminum foil or saran wrap to sort of smooth it out prior to setting up. Then sand it down smooth, put a good primer on it couple coats...sand again between then get a zip paint can and hit it several times. This will fix all the ills of a truck that has gone through many winters.

BTW...the oil in the door is a red neck fix. Works sorta but not really well. And do you want oil dripping out on your drive?

Thanks I might try that coming up when I have time. Truck kinda doesn't get treated as nicely as usual in the fall because I have cross country and that is essentially my life. Once it's over though I should have time to bond with it.

 

[rp7x]

the correct answer is you can not fix this , you can only hide it , it is rusted on the inside of the seam where no one can reach , if it is not much quit looking at it . any thing you do will not last it will come back

 

[muckabilly]

I know your probably shirt on cash but I watched my F350 start rusting out like that and it drove me nuts. I finally paid a line-x guy to coat it then he color matched over the top. it looks great however it did cost me 1000 bucks. but it will outlast the truck now. Before he coated it he removed all the rust.

 

[xcsp]

the correct answer is you can not fix this , you can only hide it , it is rusted on the inside of the seam where no one can reach , if it is not much quit looking at it . any thing you do will not last it will come back

True, a local shop told us with our truck that the best solution would be to put a new door on the vehicle.

They said they anything less and it will only come back. Funny thing is this is only happening on the driver's door, none of the other 3 doors.

 

[indy_500]

If this is exposed to salt, oil won't stop it. You need to clean it up, and scrap off reasonably well, then get some bondo at wally world or auto parts and smooth it along there where the metal is rough....I have taken some aluminum foil or saran wrap to sort of smooth it out prior to setting up. Then sand it down smooth, put a good primer on it couple coats...sand again between then get a zip paint can and hit it several times. This will fix all the ills of a truck that has gone through many winters.

BTW...the oil in the door is a red neck fix. Works sorta but not really well. And do you want oil dripping out on your drive?

Redneck fix? Noooo like millertime said oil it from new it will never rust. The oil doesnt show and nobody will ever know. Bondo is as redneck as it gets.

 

[ezra]

dump it when it still looks nice.
get some of that 2.9% for 72 mo

 

[anonomoose]

Redneck fix? Noooo like millertime said oil it from new it will never rust. The oil doesnt show and nobody will ever know. Bondo is as redneck as it gets.

Actually door panels have drain holes in them to prevent water from being held inside the door panels. So unless you want to plug the holes, the oil will find it's way out of there onto your floor. Plugging the holes is not a good idea unless you want to put a cork in there to let the water out from time to time. This is one of the reasons that the makers don't recommend undercoating anymore. If the holes get plugged you do more harm than good.

The issue is at the seam of the bottom of the door and the door skin and is bent facing uphill of the downward draining of salt and other corrosive materials. That edge is not sealed and will rust up. Once you seal that seam with bondo or other sealant, the issue will stop so long as you squirt the inner door panel off from time to time thru the winter. The crack is exposed and is an issue on a bunch of cars and trucks. Production makes this a quick build but unless it has been sealed at the factory it will flake away oil or not.

 

[SledTL]

Plot twist....my mom backed into the truck and scraped it where I had the rust on the front panel behind the corner light the other day so I have to take it to go get fixed. Might just have them do some of the door spots while it's in.

 

[indy_500]

Actually door panels have drain holes in them to prevent water from being held inside the door panels. So unless you want to plug the holes, the oil will find it's way out of there onto your floor. Plugging the holes is not a good idea unless you want to put a cork in there to let the water out from time to time. This is one of the reasons that the makers don't recommend undercoating anymore. If the holes get plugged you do more harm than good.

The issue is at the seam of the bottom of the door and the door skin and is bent facing uphill of the downward draining of salt and other corrosive materials. That edge is not sealed and will rust up. Once you seal that seam with bondo or other sealant, the issue will stop so long as you squirt the inner door panel off from time to time thru the winter. The crack is exposed and is an issue on a bunch of cars and trucks. Production makes this a quick build but unless it has been sealed at the factory it will flake away oil or not.

Actually no you do not want that seam sealed. Body shops specifically bend back the seal and oil it to keep it from rusting. Not sure if you're basing this upon assumptions over the years but I have a buddy who owns a body shop and these are the exact type of things they do...

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My buddies dads 98 2500 sierra sat outside since new it gets taken in yearly and professionally oiled they peeled back the seams when the truck was brand new there's not a speck or rust on the entire truck...

 

[xcsp]

Actually no you do not want that seam sealed. Body shops specifically bend back the seal and oil it to keep it from rusting. Not sure if you're basing this upon assumptions over the years but I have a buddy who owns a body shop and these are the exact type of things they do...

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My buddies dads 98 2500 sierra sat outside since new it gets taken in yearly and professionally oiled they peeled back the seams when the truck was brand new there's not a speck or rust on the entire truck...

I've never heard of having a vehicle "professionally oiled", who does it?

If they "peel" back the seams, do you mean they are un-doing the outer door skin from the inner panel? Can't see doing that w/o actually making a repair.