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🔧 Unlock Rust’s Grip with the Reddish Elixir of Freedom!
CRC Knock’er Loose is a 13 oz industrial-grade penetrating solvent that rapidly dissolves rust, corrosion, and grime to free stuck nuts, bolts, and metal parts. Featuring a dual-action formula with long-lasting lubrication and a distinctive red tint for precise application, it’s ideal for automotive, marine, agricultural, and industrial maintenance. NSF H2 registered and 50-state compliant, this aerosol spray delivers professional-grade performance for both DIY enthusiasts and pros.



























| ASIN | B000LEVE00 |
| Best Sellers Rank | #390,963 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #245 in Rust Prevention |
| Brand | CRC |
| Brand Name | CRC |
| Container Type | Tin |
| Customer Reviews | 4.7 out of 5 stars 1,478 Reviews |
| Flash Point | 64 Degrees Celsius |
| Global Trade Identification Number | 00078254030203 |
| Item Form | Spray |
| Item Weight | 454 g |
| Liquid Volume | 16 Fluid Ounces |
| Model Number | 03020 |
| Package Information | Tin |
| Part Number | 03020 |
| Recommended Uses For Product | General maintenance, loosening stuck parts, removing rust, cleaning |
| Specific Uses For Product | Prevent Corrosion |
| UPC | 078254030203 |
| Unit Count | 13.0 Ounce |
U**7
CRC Knock’er Loose: The Superhero of Starter Bolts!
So, picture this: My husband, the fearless shade tree mechanic, facing off against the stubborn starter bolts of his beloved Ford F150 pickup. These bolts, determined to defy his every effort, seemed to be mocking him with their unyielding grip. Enter stage left: CRC Knock’er Loose Penetrating Solvent 03020 – the trusty sidekick in his battle against rust and resistance! Let me tell you, folks, this stuff is like a superhero in a can. With a mere squirt, it swoops in to save the day, penetrating even the tightest of spaces with its industrial-grade might. As my husband affectionately calls it, this "reddish elixir of liberation" works miracles, loosening those stubborn bolts with a satisfying pop that signals victory! Now, I'm no stranger to the drama that unfolds in the garage when my husband is knee-deep in his DIY escapades. But let me tell you, CRC Knock’er Loose turned what could have been a comedy of errors into a triumph worthy of its own action movie sequel. With each bolt that surrendered to its powers, my husband's confidence soared higher than a superhero taking flight. And the best part? The humor! Oh, the laughter that ensued as my husband regaled me with tales of his epic battles with the bolts, complete with sound effects and dramatic reenactments. Who knew a can of penetrating oil could bring so much joy to our lives? So, to all the shade tree mechanics out there, I wholeheartedly recommend CRC Knock’er Loose Penetrating Solvent 03020. Whether you're facing off against starter bolts, rusty hinges, or any other stubborn foe, this superhero in a can is here to save the day – and provide a good laugh along the way!
L**R
It works AMAZINGLY!!!
I have a PTO shaft that had sat out in the weather for 10 years, I soaked it every night for a month, smacked it with a hammer and it never moved, I sprayed this on it and after one night It is apart! This stuff is AMAZING!!!
K**L
loosens rusted bolts
Works better than other oils
J**L
Penitent
Works like advertised good but
R**F
A Really Great Penitrating Oil
This stuff works great! If you can get it on the bolt it works really well fast. 1991 Jeep renegade I got all the bolts out with out breaking any. I spayed them one evening and got several out the next morning. The only ones that didn’t come out were yhe one that are hard to get oil to.The rear corner ones were the worst I had to drill a small hole next to the bushing on both shines and spat the with oil. The following day I got the rest of them out. The only thing I didn’t like was the little straw the supply doesn’t like to stay on the sprayer. Most definitely will buy again
Trustpilot
2 weeks ago
3 days ago