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🛠️ Protect your ride like a pro — because rust waits for no one!
Fluid Film Black is a premium lanolin-based undercoating and rust inhibitor designed for professional-grade corrosion protection and lubrication. Its thixotropic gel formula penetrates metal seams, displaces water, and resists salt and brine damage, making it ideal for automotive, marine, and industrial use. Non-toxic and non-flammable, it restores black chassis color while providing a durable, flexible barrier that outperforms traditional undercoatings.
| ASIN | B08MV9615R |
| Best Sellers Rank | #21,804 in Automotive ( See Top 100 in Automotive ) #88 in Care Corrosion & Rust Inhibitors |
| Brand | Fluid Film |
| Customer Reviews | 4.7 4.7 out of 5 stars (197) |
| Date First Available | June 7, 2018 |
| Item Weight | 7.68 pounds |
| Item model number | CNASB |
| Manufacturer | Fluid Film |
| Manufacturer Part Number | CNASB |
| Package Dimensions | 7.76 x 7.09 x 6.97 inches |
A**R
Great product
My buddy and I have found this product to be a great addition to helping keep our trucks in great shape. It help keep all the road salt & brine off the undercarriage of our trucks. It can be tricky to apply the first few times until you the hang of it. It does have a weird smell to it but it goes away with a few days.
M**M
Cheap insurance against rust
I’ve been using fluid film for about 6-8 years now. I undercoat my truck every other winter. Fluid Film is better than undercoating and easy to apply. It won’t harden like undercoating so it doesn’t trap in moisture. It will wash off but on in the wheel well areas. Under the truck and along the frame it stays on for years. One gallon is more than enough to coat my truck. The only con with FF is it smells like manure. That will last a week to 10 days. It’s worth it to save your vehicle from rust!
J**.
Great way to fight salt covered roadways
I put this on my truck 4 years ago ago when I bought it and it works great as a protectent
R**E
Best product we have ever used
Great product. Undercoat the entire bottom of our f250 Ford Great protection for our truck.
C**A
Very black
Works amazing
M**A
Great under coating and more
Great product for black metal parts. The clear is great for all parts. Leaves a oily coating makes cleaning 4x4 mudding toys easier.
B**3
Very Nice.
Worked fantastic on my truck with the fluid film spray gun. Worth the money. Will purchase again.
N**E
Flights rust
Use to use the original fluid film but tried the black, works just as good and love the black. A must to fight the rust
R**N
Can be brushed on
Great stuff I put it on with a brush
B**.
Great stuff
Very good product, sprays on nice and thick, we will see what it looks like after winter
B**S
Bon produit!
J' ai fait le travail avec un pulvérisateur pour produits antirouille. J' ai ajuster la pression à 80 lbs. Se shoote super bien. Avec un gallon, j' ai fait mon Ford Ranger au complet, il reste 1/10 du gallon. Bien satisfait. Merci
I**N
GOOD stuff
Good stuff
W**M
perfect fit
was able to apply successfully with air spray
Trustpilot
2 months ago
1 month ago