How to stop rust from spreading?

[badtlc]

My grandpa is getting up there in age and has a 1988 ford ranger extended cab pickup that does everything he needs. It has grown 2 small rust spots (smaller than a dime) that I can find. One is on the inside of the drivers door at the bottom. You can't see it from the outside with the doors closed. The other is on the underside of the lip of the fender at the top of the rear wheel well. This also is not observable unless you get down and look up at the wheel well.

Since repairing this isn't worth the money, is there something I can spray, apply, coat, etc. to cover the rust and prevent it from spreading? He has mentioned his buddies do this when they are restoring model Ts but he doesn't know what the product is called.

Thanks for any advice.

 

[zach1900]

Fluid film aka sheep grease, anything that stops oxygen will stop rust, it saturates the rust.just re apply as needed, not permanent but also no prep work.

 

[zach1900]

'88 Ford Ranger, wow. Don't see many of those anymore. He must take very good care of it.

 

[Nick1994]

I'd get a wire brush attachment for the drill and blast away at the spots until the rust is gone and then put lots of coats of matching color spray paint

 

[zach1900]

Originally Posted By: Nick1994
I'd get a wire brush attachment for the drill and blast away at the spots until the rust is gone and then put lots of coats of matching color spray paint
you many end up with holes, it's an 88 ford ranger.

 

[Nick1994]

Originally Posted By: zach1900
Originally Posted By: Nick1994
I'd get a wire brush attachment for the drill and blast away at the spots until the rust is gone and then put lots of coats of matching color spray paint
you many end up with holes, it's an 88 ford ranger.
Well I don't mean to go crazy with it, just flick away the majority of the rust. It doesn't sound like it's too rusty

 

[philipp10]

If you can see 2 spots, there are 10 more lurking under the paint. I would take the interior door panel off and spray the inside with oil.

 

[badtlc]

Fluid Film sounds like a worthwhile investigation. I think I'll start there and see if it still sounds good after looking into it more. I just want to keep it from spreading i don't care about the looks.

 

[zzyzzx]

Originally Posted By: Nick1994
I'd get a wire brush attachment for the drill and blast away at the spots until the rust is gone and then put lots of coats of matching color spray paint


Some sort of rust reforming primer before the paint should help slow down the return of the rust (and it will return).

 

[zach1900]

Fluid film aka lanolin aka sheep oil creeps very well, a lot of candians /norteasterners use it as an undercaoting, it doesn't dry out and you can buy a spray can for under $10, it's nothing like wd40 and such, it doesn't evaporate.

 

[aquariuscsm]

What's a good brand (along with the brand name) and where's the best place to buy it otc?

 

[Tzu]

Around here, when rust starts showing on the outside, it is 2-3 times larger on the back side of the metal. If the rusty spot feels solid and not bubbly, scratch it up with some sandpaper, prime and paint with Rustoleum. Then a week later, Fluid Film over that spot. If it feels at all crunchy, soak it with Fluid Film and let it be. If it is thin enough, a wire brush might burn through it and then you will have a hole vs a rusty spot.
Originally Posted By: Nick1994
I'd get a wire brush attachment for the drill and blast away at the spots until the rust is gone and then put lots of coats of matching color spray paint

 

[jrmason]

If you want a more permanent fix I would go this route.

http://vi.raptor.ebaydesc.com/ws/eBayISA...t=1431460388768

I painted a trailer with the black over tight rusty steel (no loose or flaky rust) and it has gone through 2 winters of high humidity and salt and still looks good.

 

[badtlc]

Originally Posted By: jrmason
If you want a more permanent fix I would go this route.

http://vi.raptor.ebaydesc.com/ws/eBayISA...t=1431460388768

I painted a trailer with the black over tight rusty steel (no loose or flaky rust) and it has gone through 2 winters of high humidity and salt and still looks good.


that looks like what I'm trying to find but in a smaller size/spray can application.