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![CRC Knock’er Loose Plus Penetrating Solvent 03027 – [Reddish] 11.5 WT. Oz., Industrial Grade Penetrating Solvent and Lubricant w/ Freeze Shock Action](https://m.media-amazon.com/images/I/71KcEWHWojL._AC_SL3840_.jpg)
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❄️ Unlock Rust’s Grip with Freeze Shock Precision!
CRC Knock’er Loose Plus is an industrial-grade penetrating solvent featuring a unique freeze shock action that rapidly cools and cracks rusted surfaces for superior penetration. Its 50-state compliant, NSF H2 registered formula is designed for heavy-duty maintenance across automotive, industrial, and electrical applications, making stuck bolts, nuts, and fittings easier to loosen and reuse.
| ASIN | B0013IZS1O |
| Best Sellers Rank | #9,146 in Automotive ( See Top 100 in Automotive ) #44 in Industrial Lubricants #174 in Oils |
| Brand Name | CRC |
| Container Type | Can |
| Customer Reviews | 4.7 4.7 out of 5 stars (491) |
| Flash Point | 64 Degrees Celsius |
| Global Trade Identification Number | 00078254030272 |
| Included Components | Super Penetrant |
| Item Form | Spray |
| Item Type Name | Super Penetrant |
| Item Weight | 0.83 Pounds |
| Liquid Volume | 11.5 Fluid Ounces |
| Manufacturer | CRC Industries |
| Material | Specialty compound |
| Recommended Uses For Product | Electrical |
| Specific Uses For Product | Prevent Corrosion |
| UPC | 078254030272 |
| Unit Count | 11.5 Ounce |
A**A
The best I've used so far at getting heavily rusted nuts/bolts apart
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.
C**I
This stuff works!
Best stuff I've used to move stuck bolts! Plus it smells good! My only complaint is that I can't find it in a store
M**T
Gets the tough stuck fasteners broken loose quicker with less wrenching/cussing!
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!
T**3
This stuff right here, whoa! CRC Knocker Loose w Freeze
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…
A**R
Good stuff
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.
H**N
🙂
👍👌
I**.
Works great 👌
Works pretty good, helps definitely to loosen bolts
J**G
Great
Greatvstuff
Y**.
Works better than any rust penetrating fluids out there never had a product work as good and as fast as this one
A**J
Very good for rusty bolts
R**D
No dislikes
D**H
I've seen this guy use this on YouTube. And he's got a favorite saying, like no way for f***'s sakes. Thought it would be. He made it look like it was a good product. I bought it. It's very expensive, and I had to go back to my old penetrating fluid. Because it didn't work for s***.
Trustpilot
2 days ago
2 months ago