what kind of oil for protecting seams from rust?

[Renthorin]

This is on the rear hatch of my Blazer but would apply to the lower door seams on a TR as well.

I have heard that to combat rust and prevent it you can pour oil into the seams and it will seep down in.

What kind of oil? I thought oil was lighter than water so the water would get under it?

Thoughts?

 

[turbo nasty]

I knew so old country guys that used diesel for that purpose...though I never tried it

 

[turbofabricator]

Old chrome-alloy frame airplanes use to use hot linseed oil for just that purpose. They would heat the linseed oil and then pour it inside the tubing, letting the excess drain out. Still the recommended proceedure for steel frame airplanes, so it must work.

 

[Renthorin]

I thought linseed oil was paint brush cleaner. Would it be safe for the car's paint?

I was told yesterday to use STP oil? In the red container. Heat it up to make is easier to pour.

The guys on Dream Car Garage say to use "Crown" or something like that. It is suppose to be more dense than water so it works its way beneath the water.

I looked locally but couldn't find it.

 

[NASSTY]

Up north here some people spray the undercarriage of their vehicles with bar and chain oil to protect it from winter road salt.It works better than undercoating.The EPA may not like the idea but I know several people that do it.It's thick and not easy to pour but maybe if you heat it up?I dunno?

 

[rob350]

Does Texaco still make rustproofing? My dad has a bunch of it and it works really good. I think its oil and some type of wax?

Rob

 

[turbofabricator]

LPS 3 works real good, too. We use to spray the entire belly of 747's with that stuff. Now we use stuff called Corban, and spray the ENTIRE airplane inside with it. Zip-Chem Cor-Ban

 

[tom h]

3M Rustfighter-I is a sticky, waxy, self-healing aerosol intended for these kinds of applications. You do need rear access to the panel, though.

 

[no-nos]

por-15 is a great on rust , stops it in it's track

 

[Renthorin]

I thought the waxy ones were bad as they never get deep enough.

Por-15 is good stuff but I doubt I can get it into the bottom weld seams of the hatch :-(

Thinking something more liquid like WD40 or heated motor oil...

 

[chrisgarrett]

Don't know if this applies to your situation, but I poured Por15 into my quarter panels from the left and right sides of the trunk. I poured it from the can into a cup an then poured it into the panels. I put some papers on the floor and it drizzled out for about an hour. When I shine a light in there, I can see the entire area is coated with a thick layer of Por15.
One problem with using any kind of oil on the bottom of a car is that the oil attracts and hold dirt. In no time you will have a very dirty undercarriage.

 

[John Larkin]

WD40 smells not so good. I think you'd be better off with pouring some motor oil in there. It will definitely find it's way to the bottom. Maybe even synthetic which finds it's way past gaskets regularly. You won't need much and you can catch the excess in a pan for reuse in other seams.

 

[no-nos]

Don't know if this applies to your situation, but I poured Por15 into my quarter panels from the left and right sides of the trunk. I poured it from the can into a cup an then poured it into the panels. I put some papers on the floor and it drizzled out for about an hour. When I shine a light in there, I can see the entire area is coated with a thick layer of Por15.
One problem with using any kind of oil on the bottom of a car is that the oil attracts and hold dirt. In no time you will have a very dirty undercarriage.

i did the exact same thing except i striped my door completely and made sure por was everywhere inside and it looked just like he says