CRC 06026 Heavy Duty Corrosion Inhibitor, 10 Wt Oz (6 Pack)

I've been a fan of CRC for a few years now. I watched some tests and CRC seemed to hold up better than other competing products. I have been using it since for coating the underside of cars, tractors, mowers, shop tools, basically anything metal that sees humidity and isn't an area I regularly touch. It leaves a waxy coating that is extremely durable to washes, salt spray, and normal use. It stays on much longer than other coatings and helps prevent rust and corrosion. Since it leaves a coating, it isn't great for areas you touch, but it works great for other metal surfaces.The bundle of 6 cans is a great way to stock up on this product. They spray well for continuous spraying, and seem to work well for occasional sprays from the same can. I spray it out upside down each time I put a can away, just to make sure there isn't a buildup of the product in the spray nozzle, and I haven't had any stop spraying before using all the product in the can.

I order a pack of these every year to coat my truck. It isn't necessary as this stuff lasts a very long time but for the cost I treat it as cheap insurance. I highly recommend making sure you wear a Tyvek paint suit and respirator when spraying this stuff. It is very potent and will stick to any exposed moisture on your body. The nozzle that the cans come with is the only negative with this product. It is too small and requires a decent amount of force to push down on it. You can swap it for one off a brake clean can which fixes the issue! Overall this is the only aerosol stuff I would use to undercoat my vehicle.

If you're redoing a frame on a semi truck then look no further for a semic clear coat to go over your restoration oxidization paint and paint as a third coat to protect it.

Thought I'd try this on a new vehicle and I like it's tackiness over the wetness of the lanolin based products. I removed tail lights and the plastic wheel wells of my Ford Maverick and was able to get good access to all the metal that would need coverage. I used four cans on just the bed area, I still haven't done the front so the product didn't go as far for me as I had hoped. Like everyone else says, it's too bad this doesn't accept a spray wand but it's pretty thick and I don't think it would really spray anyway. I used Fluid Film in my doors and tailgate with a spray wand so you may need to tackle different areas with different products. Oh, my vehicle is a light color and this stuff is a nasty color, but it's better than the color of rust.

Undercoated a f-150 supercab with a 5.5’ bed and it took 5 cans to do absolutely everything in two robust coats. It stood up really well to the Midwest hell - that of gravel and salt - A+ Wax is superior to just about everything else because unlike fluid it won’t eventually wash off, and unlike solid coats it won’t easily plug weep holes (internal panel/tube water and then rust buildup trashes a vehicle fast) and it somewhat self heals. It can easily be removed with solvent if you want to remove it (once got a brake rotor pretty bad), let’s see a solid coat do that. It drys tacky because the wax is tacky, so it will pick up dust and dirt, cold power washing won’t remove it but a hot one will. It dries with a brown tan color so it typically isn’t used where anyone cares about looks. CRC marine is cheaper than more expensive wax alternatives. Started early enough, was will coat threads without causing seizing issues, saving a ton of headaches for you or any mechanic. Recoat anything that looks like it needs it once every season and you’ll be fine for the mechanical life of the vehicle, if you really kick gravel check problem areas every 100ish miles and recoat if needed.

This stuff sprays on nice and smooth and leaves a nice even coat. I use this stuff primarily underneath the vehicle and it takes about 6-8 cans for a mid sized truck (Tacoma) depending on how particular you are. I usually over do it so if you're like me buy 12 cans and you'll have spares to use later on if need be. I've done a Toyota Tundra and it held up great for 3 years so far and no reapplication yet. I just did my new 2023 Tacoma as well. Wear a respirator and cloths you don't care about. Use Goo Gone to get it off your hands and then wash with Dawn dish soap.

The 'Project Farm' channel on YouTube did a video and concluded that this stuff is one of the best rust protectants for the underbodies of cars. I live up north, so I bought a couple cases and applied to our cars.To be fair, I've only used it for one winter, so I don't know the long term effectiveness. But so far, so good.My only complaint is that I wish it came in a bulk size so that you can hook it up to a legit sprayer. The little aerosol cans make application painfully slow and difficult.

In 2019 I coated the underside of my Mercury Grand Marquis with this stuff. The other day I was having a fuel pump installed and my mechanic commented on how nothing ever seems to rust on this car. I shared my secret with him and he was impressed. Picking up a few cans for a touch up. It also works really well on lawnmower decks. Treat the underside every fall and the deck will last forever!