What do you use to protect against rust and corrosion

[GreyBronco]

I live in the north where rust is king. When my bronco arrives which will be probably mid to late winter, what is suggested to use to protect against rust and corrosion when you first pickup the bronco?

Base, 2.7, sasquatch.

Sponsored

 

[martyb]

Fluid Film on the underside. The body is mostly aluminum

 

[Rayder]

Fluid Film on the underside. The body is mostly aluminum

I took the liberty of testing with a magnet and that is not really true, contrary to some early info from Ford. The hinged panels (doors, Hood, gate) and front fenders are aluminum. The floor pan, rockers, front structure, and the entire rear are steel.

 

[Santos]

Fluid film, is one option that ive noticed there is 2 others that ive seen one is under the same name brand as liquid wrench and the other is woolwax I believe.

 

[Dillhole]

Anyone have any experience with Krown?

My Jeep was undercoated from the dealer with that nasty crumbly rubberized garbage that I'll never use again.

 

[RG7]

As others have said, fluid film is really the best option. However keep in mind you should reapply it once a year. It’s like any other protective coating you’ll need to maintain it.

Jury is still out on whether or not you should strip the old layer before you reapply. Some don’t want road salt anywhere near the frame, even on top of a layer of film. Others believe in building coats and sealing the past winter’s salt off from the air.

Some will apply in early November and strip it after the last snow in spring. Others strip and reapply at the same time in early November.. you get the idea. Lots of ways to go about it but FF works. Stay away from undercoatings that harden. If it’s not done right it could leave gaps for corrosion to start and hide the process until it’s too late.

 

[TRMFAM]

On the Raptor forums everyone recommends POR15. Guys were taking brand new trucks and using the por15 cleaner then por15 prep and just a foam brush and going over the entire underside. I did a gate and the poles in the horse stall and super easy to put on but if exposed to sun you have to add another uv coating. Still looks new 6 years later. I did a small utility trailer also about 5 years ago and people still ask me if I got a new trailer. YMMV.

 

[Deleted member 3063]

soap and water, 10 year old Rap in the rust belt looking good.

 

[Virtual-Chris]

It seems a lot of people like Fluid Film but it attracts dirt (remains wet and tacky) and washes off over time. A cosmoline based product seems better to me as it dries hard and doesn’t wash off nearly as easily.

This guy has a number of videos on the topic…

 

[MDPensfan]

I use fluid film on the underside of my 4Runner, which generally attracts rust like poop attracts flies. Super easy to put on with a spray gun and air compressor.

 

[GreyBronco]

Well I've placed an order on Amazon for a gallon of Fluid Film. Thanks everyone.

 

[De Brus]

Well I've placed an order on Amazon for a gallon of Fluid Film. Thanks everyone.

After watching the posted video, crc seems to be the winner. Unless you don't mind dust and dirt built up on the FF tacky film

 

[Virtual-Chris]

After watching the posted video, crc seems to be the winner. Unless you don't mind dust and dirt built up on the FF tacky film

Agreed. That was my conclusion as well. It seems ideal for an off-road vehicle… especially if you plan to take a power-washer to the under carriage occasionally to remove dirt.

 

[Shotsy]

A simple search for 'rust' in title yielded these results...
https://www.bronco6g.com/forum/threads/ford-should-do-this-rustproof-undercarriage.3491/
https://www.bronco6g.com/forum/threads/rustproofing-chassis-from-rust.1519/
https://www.bronco6g.com/forum/threads/rust-proof-undercoating-type-items.12680/

Sponsored