FJ40 - Solution for “Rust Never Sleeps”

[Ackcruisers]

Posting to see if there are any recommendations to address these body areas on my 1976 FJ40 (images below). While I’m sure there are tons of solutions to be performed with the body off, is there any good solutions to stop or slow the rust in the below areas?

 

[snaggletto]

It grows from in between the layers where dirt and moisture get trapped. Once you see a little bit, there is much more underneath you can't see. Eventually it bubbles out through the outer skin. External treatments don't get in-between the layers. It is unavoidable in the spot welded overlapping areas.

 

[Pierps]

Yeah, I'm afraid prevention is the only real solution in those areas. Prevention generally means good quality seam sealer.

You could brush some rust converter on, and hope it seeps down between the overlapping panels, but I think that's about the best you can do at this point.

 

[JohnnyC]

your in MA... you can get it oil coated... @40Flipper had a thread about a friend selling or applying it... think flipper is still in ma

 

[curtislow]

your in MA... you can get it oil coated... @40Flipper had a thread about a friend selling or applying it... think flipper is still in ma

Fluid Film

 

[snaggletto]

I thought I read once that they used to use ATF to spray into areas of your frame and body as it is thin and creeps into cracks...

 

[RiggityJ]

One more vote for fluid film.

This is a good comparison: Youtube: Project Farm Undercoating Treatments
(video volume is loud right off the bat, so watch your volume)

 

[Ackcruisers]

This is an awesome reply to my inquiry. Thanks to everyone who weighed in. The video comparison of oil based solutions is very helpful. I wonder what all the experts do when restoring FJ40’s for their stage 3 type hedge fund, Silicon Valley entrepreneur type customers.

 

[JohnnyC]

Silicon Valley entrepreneur type customers.

They have $$$$... They do not care

 

[Ackcruisers]

They have $$$$... They do not care

That’s true but most have less money now than last month. Unless you’re Ray Dalio from Bridgewater....
Seriously, what is the correct process when putting the tub together and coating it properly. I will do some searching on MUD as there must be dozens of best practices.

 

[MrBill]

Does anybody have any experience with the product Woolwax?
It's lanolin based like Fluid Film, maybe a little thicker, but still promises to "creep" like Fluid Film. What interested me is that in addition to the clear formula it is also available in a black formula. That seems like it would be nice for frame and undercarriage coverage (if you care about how that looks).
Just looking to see if anyone has used it.

 

[bhsdriller]

Does anybody have any experience with the product Woolwax?
It's lanolin based like Fluid Film, maybe a little thicker, but still promises to "creep" like Fluid Film. What interested me is that in addition to the clear formula it is also available in a black formula. That seems like it would be nice for frame and undercarriage coverage (if you care about how that looks).
Just looking to see if anyone has used it.

There's a big post about it in the 80 section

Anyone try WoolWax yet?

forum.ih8mud.com

 

[MrBill]

Thanks! I'll check it out.

 

[40Flipper]

your in MA... you can get it oil coated... @40Flipper had a thread about a friend selling or applying it... think flipper is still in ma

Its illegal in MA to do the oil undercoating I believe. Fluid film is my go-to!

 

[Ackcruisers]

The next system I’m tackling after full electrical restoration is the fuel system. After removing seat and tank cover to inspect fuel tank (made by MTS), noticed no paint under tank. Can someone please recommend a product to apply in this vulnerable area that will provide a durable, long lasting solution. It does not have to match the truck color as no one will see it.

 

[Ackcruisers]

Decided to just sand prime and paint. I will place the poly tank on some 1/8th inch rubber attached to bottom of truck with 3M gasket adhesive. Seems strange there was nothing between the tank and floor.