3M aerosol undercarriage spray...

[billybronco]

Hey folks.....Question.

Got an FJ that I'm trying to do some preventative maintenance on.....There are a few sparse spots of rust here and there on the undercarriage. Mainly on the rear diff. and a few spots up front in hard to reach places.

This stuff is supposed to be have a rubbery texture and supposedly a good option.

What spots should I AVOID hitting with this material?

Thanks

 

[fj404life]

Personally I would not use an undercoating (or bedliner) type stuff on my 40. If it ever starts de-laminating it will trap water and cause worse rust than just leaving it. Clean it up, wire brush etc to get the loose crap off, treat it with some Ospho (ace hardware) and primer/paint it with your choice of paint. my .02

 

[billybronco]

Thanks bud. Makes sense.....Greatly appreciated.

Now, I DID happen to come across some VHT (Very High Temperature) "Flame Proof" paint (rattle) in my Pop's shop. It's made for headers and such.....Silica, ceramic coating.......

What's the deal with this stuff?

Recommended?

 

[dclark77l]

For what it is worth:
I just finished two coats of Rust Bullet and one top coat of flat black Rustoleum on the undercarriage of my 2006 4Runner. I basically hit the rusted spots with the Rust Bullet, then hit as much as possible with the top coat. Guess time will tell how well it works.

I used a wire brush to get the loose stuff off, then sandpaper to rough up the remaining paint. Being in the Rust Belt, lots of rust for a fairly new vehicle.

Photos after the Rust Bullet. It looks sloppy, but I was not worried about a little silver paint on parts I was going to paint black later.

 

[Joe_E]

Hey folks.....Question.

Got an FJ that I'm trying to do some preventative maintenance on.....There are a few sparse spots of rust here and there on the undercarriage. Mainly on the rear diff. and a few spots up front in hard to reach places.

This stuff is supposed to be have a rubbery texture and supposedly a good option.

What spots should I AVOID hitting with this material?

Thanks

I used the 3M stuff for years, probably why my 60 is in such good shape rust wise.
I used it in the fender wells and such over exsisting good paint.
I wouldn't spray it over rust. Use paint for that.

 

[billybronco]

ahhhhhhh....i see. good point.

thanks fellas.

 

[Dano50]

Fluid Film works excellent as an undercoating. It is a soft coating, so it is self-healing and will not trap water. It is always active, migrating to inaccessible areas to provide solid protection. The lanolin base embeds into the pores of the metal, where it seals off all oxygen, preventing corrosion. It soaks through existing rust, stopping it on the spot from progressing further and loosening it up for easier cleaning.

 

[billybronco]

thanks Dano!

 

[My wife said no FJ!]

Fluid Film works excellent as an undercoating. It is a soft coating, so it is self-healing and will not trap water. It is always active, migrating to inaccessible areas to provide solid protection. The lanolin base embeds into the pores of the metal, where it seals off all oxygen, preventing corrosion. It soaks through existing rust, stopping it on the spot from progressing further and loosening it up for easier cleaning.

So...after a decent clean up of the undercarriage, is it suggested to just spray it on?

Not sure I've seen any, but can it be purchased in a quart or gallon, and then be brushed on? Will dust and dirt get caught in/on it, and build up a crust?

Say I want to rebuild an axle...how easy is it to remove Fluid Film? ...just wash it down?

And finally, could/should this be reapplied once or twice a year as a regular preventative maintenance?

Thanks

 

[Dano50]

So...after a decent clean up of the undercarriage, is it suggested to just spray it on?

Not sure I've seen any, but can it be purchased in a quart or gallon, and then be brushed on? Will dust and dirt get caught in/on it, and build up a crust?

Say I want to rebuild an axle...how easy is it to remove Fluid Film? ...just wash it down?

And finally, could/should this be reapplied once or twice a year as a regular preventative maintenance?

Thanks

You could purchase a gallon and apply using a standard undercoating gun. A gallon will be good for two applications, which is more than enough to get you through a full year. All depends on your location. If you're in a heavy salt state, I'd recommend using it twice, once before and once after winter.

Fluid Film leaves a thin, wet film, which will not build up a crust because it never gets tacky. A good pressure wash will remove the product.

To purchase a gallon, you could visit our website to find your closest dealer. Either they could order one for you or you could purchase from on of our online dealers. You can find them on our website as well.

 

[My wife said no FJ!]

Thanks Dano