Fluid Film Black Non-Aerosol, Long Lasting Corrosion, Penetrant & Lubricant, Anti-Rust Coating, Protects All Metals in Marine and Undercoating in Automotive & Snow-Handling Vehicles, 5 Gallons

Fluid film is a great product. super easy to apply if you have a car lift, undercoating gun and a little ambition. If you have any over spray, it wipes right off with a cloth, No staining. If you live on gravel, or dusty road, you're in luck! Once some dust adheres to this stuff, it helps create a firmer, longer lasting bond to the frame. And yes, it will creep into every crack and crevice, preventing any further rusting. Over time, you will have to reapply this stuff in areas hit hardest by water, snow, etc. Avoid using "Undercarriage wash" option at the car wash, as it will remove this stuff.

used airless sprayer and it went great.2000psi got it good and thick your muffler will smoke for a bit if you get in on there. will not work as good with heavy build up you may have to use a air needler/chisel to get the flacks off before you spray. used painters plastic on ground to catch overspray every ting worked well getting it on now just to wait to see how long it will stay good.A++ great coverage 2 1/2 to 3 gallons will cover a whole chevy 1500 nice and thick hope this helps others.

Been undercoating my truck for 13 years with this stuff. Works amazing and I highly recommend if you live in a rust prone area.

I adore Fluid Film Black for its exceptional ability to cling to metal surfaces, providing unmatched protection for undercoating, marine applications, and winter vehicles. This product stops rust in its tracks and offers long-lasting results. Highly recommend!

Very easy to apply

great for marine and auto use. Highly recommend!

Fluid Film Black’s thick, non-aerosol formula clings fiercely to metal—perfect for undercoating, marine use, or winter vehicles. Stops rust cold and lasts!

Great deal on fluid film black. Save your chassis from salt & use fluid film, any color