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Best Car Undercoating? Let's find out! Is Flex Seal the Best Rust & Salt Protection?

Project Farm

2,769,218 views

FLEX SEAL, WD-40 Specialist Long Term Corrosion Inhibitor, Fluid Film, Corrosion X HD, CRC Heavy Duty Corrosion Inhibitor, Corrosion Block, and used motor oil tested as car / vehicle undercoating for resistance to rock chips and corrosion (oxidation / rust). Various deicing products, such as salt brine, are used on roads to make them safe for driving, but these products cause corrosion. Hope this video helps you select a product that's best for your circumstances. I purchased all of the products with the generous support from Patreon supporters.

➡ Thank you very much for supporting the channel: Patreon: projectfarm
➡ An easy way to find past videos along with products tested: http://bit.ly/2FCrBpk A big thanks to Jim for putting this together.
➡ Merch: www.Project-Farm.com
➡ Click here if you'd like to subscribe: @projectfarm
➡ As an Amazon Associate I earn from qualifying purchases.

➡ Products Tested In This Video (in no particular order):
Fluid Film: https://amzn.to/3gkefuK
CRC HD Corrosion Inhibitor: https://amzn.to/3jfWsqD
Corrosion Block: https://amzn.to/3giZpEW
WD40 Specialist Long Term Corrosion Inhibitor: https://amzn.to/3laxHh1
Corrosion X: https://amzn.to/327Vdm4
Flex Seal: https://amzn.to/2FH2RMJ

Videography Equipment:
Sony DSC-RX10 III Cyber-shot Digital Still Camera: https://amzn.to/2YdXvPw
Canon 70D Camera: https://amzn.to/31b5Gy0
Azden Microphone: https://amzn.to/34d3DLE
Go Pro Bundle: https://amzn.to/31aince

This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Project Farm LLC

20 Comments

@ProjectFarm Creator 6 years ago (edited) Pinned

Thanks to everyone who requested this one and please let me know which products you'd like tested in round 2. Thanks again, Todd
Products Tested In This Video (in no particular order):
Fluid Film: https://amzn.to/3gkefuK
CRC HD Corrosion Inhibitor: https://amzn.to/3jfWsqD
Corrosion Block: https://amzn.to/3giZpEW
WD40 Specialist Long Term Corrosion Inhibitor: https://amzn.to/3laxHh1
Corrosion X: https://amzn.to/327Vdm4
Flex Seal: https://amzn.to/2FH2RMJ

@travisa2563 6 years ago

What I’m most impressed by is how long he’s been able to keep track of his pen.

@greghuth9580 6 years ago

We never intended for someone to actually test our product by spray-washing... Damn that Todd!

@fabiankonrath2804 6 years ago

Man, this cardboard box will never rust!

@9ZERO6 3 years ago

7 years of Fluid Film on my Honda (applied yearly) It has done very well in the Ohio rust belt, and when I look at the underside of similar aged cars, the difference is obvious. It is also very easy to apply, and keeps fasteners and bolts from rusting up on the undercarriage. I highly recommend it. Great video!

@Kyle-JustKyle 5 years ago

Me: I need to buy something
My Brain: watch Project Farm to know what to buy

@JeanCRoman 6 years ago (edited)

It’s incredible the amount of work he puts into his videos, so detailed and informative and of course honest as he has no sponsors. Hope the video gets millions of views 💪🏼

@OldBuford 6 years ago

you know whats great? when you go to the local auto parts store and the guy behind the counter asks "you ever watch that project farm guy on youtube?" hell yes i do xD

@mojo4376 3 years ago (edited)

Need to update this test with Blaster, Amsoil, and Woolwax.

@theimperial9858 6 years ago

Soon enough, companies will pay you to have your approuval seal.

"This product has been tested and approved by Project farm" seal!!! to show costumers that its serious !! hahahaha!

@michaspi 6 years ago

Fluid Film, you say?

[South Main Auto has entered the chat]

@Ma77riK 6 years ago

my man's out here killin ol wives tales one at a time ⌚

@DmaxDieselDolly 4 years ago

I was literally thinking to myself if there is a better option than Fluid Film, and I stumbled upon this video. I drive a truck and live on a dirt road, so I genuinely appreciate the lengths you go to for testing.

@hillonwheels8838 6 years ago (edited)

When I was still in the Navy we would coat are aircraft in Fluid Film everyday after a fresh water rinse while on deployment to protect them. We would use a lot of it on the magnesium gear boxes and steel screws and put a light coat on the aluminum skin. Trying to keep aircraft from corroding with salt spray everywhere is a pain and Fluid Film was a life saver. Glad to see it do well in your tests.

@33Skygazer 6 years ago

Honestly, the students in my school that participate in our yearly science fair could learn TONS from how you design and perform your tests!

@jamesplotkin4674 6 years ago

I once owned a car that leaked so much oil under the bodywork, there wasn't a chance for it to wash away in the rain. No rust at all.

@hawkeye1893 3 years ago

As somebody who volunteers on an Iowa-class battleship, and deals with literal tons of Cosmoline applied as preservative, I can tell you that yes, it works an absolute treat in inhibiting corrosion - there is really no better product.

But if you ever... and I mean EVER have to remove it once it's dried, you will first have to travel through all seven circles of hell, while getting beaten with sticks. It's a literal nightmare. The only things that even turn it into a gelatinous state are chemicals the EPA banned decades ago.

Just... be damned well sure that whatever you're applying that CRC to will never, ever, EVER need to have it taken off again.