Fluid Film 11.75 Oz Undercoating Protection Aerosol Spray Can Black 3 Pack, Rust Inhibitor and Prevention, Anti Corrosion Multi Purpose Penetrant and Lubricant, Extension Wand

Exactly what I was looking for, didn’t use all three cans to undercoat the bottom of the truck.

I've been using the Black (not red) Fluid film for the past 5 years and I must say it's probably the best protection and longest-lasting you can get without bringing your vehicle in to be undercoated professionally. Other products like rubberized undercoating or bed liner will chip off more quickly underneath the vehicle but this fluid film does not. Undercoating with fluid film took 3 cans to do my F150 initially. I bought 3 more the next year only to find out that the majority of last year's coating was still there and only ended up using half a can to do touch ups in some spots. If you're living in the rust belt and you're opposed to car cancer (rust) and frame damage, I'd highly recommend trying fluid film black. I'm a believer.

Black fluid film - makes everything look new when you spray it on the underside of your vehicle!

Fluid Film is an absolute game-changer when it comes to rust prevention. I’ve used it on everything from my truck’s undercarriage to tools, trailers, and even hinges—and it never disappoints. It penetrates deep, stays put, and forms a solid barrier against moisture and salt. Perfect for harsh weather and long-term protection.It goes on smooth, doesn’t dry out or crack, and the lanolin base makes it safer and less toxic than a lot of other products on the market. The smell is mild, and it’s super effective at creeping into tight spots where rust loves to start.My only gripe? The applicator. It tends to get messy, and I ended up with it all over my hands. Not a dealbreaker, but wearing gloves next time is a must. This is the reason for the 1 star deduction. If they fix the applicator, I’ll bump it up to 5 starsAll in all, Fluid Film is a staple in my garage now. If you care about your gear lasting, this stuff’s worth every penny.

Use this every year and every year the frame on my truck looks great.

I drive a 6-year-old pickup that I intend to keep for many more years, and live in New England where lots of salt is used in the winter for keeping the roads from icing up. The result is rust spots starting to form on the underside of my truck.I've used Fluid Film before and it works great; it's lanolin which sticks to the metal and keeps water from getting in. The downside of this is that it smells horrible when you're applying it. (Do NOT get any on your exhaust or you'll smell it for weeks!) A small price to pay for preventing rust, though!I have only been using this to spot-treat sections starting to show signs of rust, and it's very effectively kept the rust from spreading or getting larger. The advantage of Fluid Film Black is just in the color; sprayed over rusty spots on the black frame, it makes them look better than the clearish-tan shade of regular Fluid Film. (Over time, some road grime will adhere to it--which doesn't hurt the effectiveness at all--and it'll look black anyway, but having a black color from the start is even better.)In the attached photo, the glossy sections have just been treated with Fluid Film Black. Over time it's lost its shine as expected and desired and looks just like the rest of the frame. More important than looks, I don't have to worry about it rusting this winter.

The fluid film worked fine. I've used this stuff many times with the extended nozzle without issue. However this company has choosen to sell a nozzle that doesn't work all that well. It doesn't seat well and sprays everywhere. I was still able to coat my boat trailer along with my hands the ground and everything else very wasteful. No returns!!!!

New customer;It's messy.. but that's the least of your worries.. by my question is what's the drying (curing) time?