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

I've been using this product to undercoat my big trucks my dump trucks and my dump trailers and my equipment trailers this is the most impressive rust inhibitor you would ever want to use easy to apply and really does a good job this will keep your frame from rotting out for sure it's been around a long time and has proven itself

Excellent quality product. Delivered quick. Bucket sealed tight with extra tape seal to front door. Product applies exactly the same as the original tan color fluid film, same consistency and has the same rust protection properties -- natural lanolin but tinted jet dark black. Color looks good on underbody as well as on rockerpanels, fenders particularly if you have a black vehicle -- slight overspray on door and fender edges that are esp susceptible to rusting blends perfectly with paint. 5 Gallon bucket sold by ShopEddies half the cost compared to 1 gallon pails of original color fluid film in auto stores.

Very pleased kreeps into spot that we're missed.

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.

Product goes on well and does not drip. Excellent coverage and jet black colour.