
Loosen frozen metal parts the professional way with Kroil Original Penetrant in liquid and aerosol (formerly AeroKroil) formulas. Discover why this is the best penetrating oil to loosen bolts in various applications.
When freeing corroded items in challenging spaces, nothing rivals powerful, industry-proven Kroil penetrating oil. Used and trusted by pros and experienced DIYers alike since 1939, Kroil quickly loosens rusted nuts and bolts and frees frozen shafts, pulleys, and more. Thanks to Kroil's ability to penetrate the tiniest opening, thread, or crevice, no space is too tight to reach. Corrosion meets its match, as Kroil removes and prevents rust, cleans and lubricates, and displaces moisture. NEW! NSF Nonfood Compounds Program Listed Category Code: H2 Registration #165745 (8oz and gallons). 50-State VOC Compliant. Made in the U.S.A. (Portions of packaging imported.)

- Attacks Corrosion & Removes Rust and Carbon Deposits
- Dissolves gum, dried grease, oil, and rust
- Lubricates, cleans, and prevents rust
- Expels moisture and protects against corrosion
- Frees frozen shafts, pulleys, and jammed gears
- Penetrates Faster
- Quickly loosens rusted nuts and bolts
- Works Everywhere
- Will not attack or damage metal
- Simplifies Repairs
- It makes the toughest maintenance jobs easier, faster, and safer to execute
- Penetrates Deeper
- Penetrates one-millionth-inch spaces

Corrosion, compression, and chemical reactions often cause frozen metal parts to stick together. Short of hitting them with another object, fused metal objects have traditionally been hard to separate. However, with Kano AeroKroil Penetrating Oil, you can save your energy for other projects. It makes its way into the smallest spaces to break the chemical bonds holding two pieces of metal together, whether they're stuck because of thermal variations or electrical relationships.
Kano Kroil Penetrating Oil promptly penetrates so that seized parts move again. Its unique chemical makeup allows it to break down rust, corrosion, and caked-on substances while loosening and lubricating your engine's components. This aerosol can-based oil contains small concentrations of aliphatic alcohol, glycol ether, and trimethyl benzene, so it works hard to break the bonds tough substances create.
Each can of Kano Kroil Aerosol (AeroKroil) Penetrating Oil features a spray nozzle with a long, slender attachment that makes it easy to spray into hard-to-reach areas. It's considered "The Oil That Creeps" because even if you cannot spray it directly on the bond you need to be loosened, AeroKroil makes its way to where it needs to be.
Item Specifications
Size | Old Part Number | New Part Number | UPC |
10oz | AP | KS102 | 857236004018 |
13oz | KS | KS132 | 857236004025 |
16.5oz | IS | KS162 | 857236004032 |
15 Gallons are drop shipped direct only