CRC Knock'er Loose Plus Penetrating Solvent- 11.5 wt. oz.

Had a saw get seized up. Shot some of this into the piston and I managed to break it free. Best part is I still had compression and she still works like a horse. Originally got this for stubborn bolts

For $15 I was blown away at how well this stuff works. I needed to replace some exhaust parts on a nearly 20 year old car and the studs were completely rusted and looked like they would need to be cut out. I sprayed this on all of them and let it sit for a couple of hours before trying to remove them, fully expecting to break at least one of the studs off due to corrosion. Instead, when I came back a lot of the crusty looking rust was gone and after working the nuts back and forth I got all of them off without issue and was able to reuse them. It's an expensive spray but that bottle is a decent size and it sprays on easily. Whatever is in it works extremely effectively at lubricating through the rust and letting you get heavily rusted nuts off. Long story short, I highly recommend this stuff.

Seems to work better than other penetrating sprays. I plan to use it as my "first choice" from now on given the positive results so far!

Works well I got a nut loose I wanted to.

My Milwaukee hackzal was frozen and the pistion/blade would not move do to water the other day getting all over it from cutting water lines. So it was frozen and when pulling the trigger would not move just heard it click. tried WD40 and PB Blaster and did not work. Used CRC Knock'er loose and let sit for 10 mins and sure enough dam thing was working like brand new again. THIS STUFF ROCKS. I have used on froze bolts as well and have not found anything it will not work on.

Works well. Spray it and wait overnight. Sometimes you may need to loosen a 1/4 turn respray and retighten several times. If this doesn’t loosen it the bolt is going to break.

Works pretty good, helps definitely to loosen bolts

This CRC Freeze penetration is legit. Busted loose all the exhaust manifold bolts on my original 289 engine in my 1968 Mustang. All original rust from Ohio. Uber impressed and so glad I did not resort to using a torch to try and bust bolts loose…

Works better than any rust penetrating fluids out there never had a product work as good and as fast as this one

Works great and smells even better! Use it on everything

Nothing works better to loosen rust

Very good for rusty bolts

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