Skip to product information
1 of 10

Kroil® Original Penetrating Oil – Liquid (8oz to 15 Gallon)

Kroil® Original Penetrating Oil – Liquid (8oz to 15 Gallon)

Kano Laboratories

2 total reviews

44 in stock

SKU:KROIL-8OZ

Regular price $18.30 USD
Regular price $22.88 USD Sale price $18.30 USD
Sale Sold out
Shipping calculated at checkout.
Quantity

Kroil® Original Penetrating Oil – Liquid (8oz to 15 Gallon)

The original “Oil That Creeps” since 1939.

Kroil® Original Penetrating Oil in liquid form creeps into the tightest tolerances to break the bond of rust, carbon, and corrosion—freeing seized fasteners and components fast. It also cleans, lubricates, displaces moisture, and helps prevent future rust so repairs go smoother and equipment gets back to work.

  • Deep penetration: Reaches one-millionth-inch spaces to loosen rusted nuts, bolts, and fittings.
  • Cleans & protects: Dissolves gum, dried grease, and carbon; displaces moisture to resist corrosion.
  • Professional results: Trusted by MRO, automotive, marine, and industrial technicians.
  • NSF Listed H2: Nonfood Compounds Program, Reg. #165745 (8oz & gallons).
  • 50-state VOC compliant: Made in the USA.
  • Sizes: 8oz, 1 Gallon, 5 Gallon, 15 Gallon.

Kroil® Original delivers proven penetration where conventional oils stall. Apply a few drops or flood the area, allow capillary action to work, then break free even stubborn, corroded assemblies. Ideal for shop rebuilds, field service, fleet maintenance, and general repair—anywhere fasteners seize or precision parts need gentle persuasion without damage.

Industries using Kroil®: aviation maintenance, automotive, marine, industrial

Technical Specifications

  • Composition: Penetrating oil and solvents designed for capillary creep and corrosion removal.
  • Functions: Penetrates, loosens, lubricates, cleans, displaces moisture, helps prevent rust.
  • Certifications: NSF Nonfood Compounds H2 (8oz & gallons), Reg. #165745.
  • Compliance: 50-state VOC compliant; made in the USA.
  • Packaging: 8oz bottle; 1, 5, and 15 gallon containers.

Prefer aerosols? See Kroil® Original Penetrating Oil – Aerosol (AeroKroil®) in 10oz, 13oz, 16.5oz, and 3oz sizes.

Need bulk? Our Kroil® Original – 55 Gallon Drum supports high-volume maintenance programs.

Note: 15 Gallon containers may ship directly from the manufacturer.

Customer Reviews

Based on 2 reviews
100%
(2)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
B
Bob Veach
best I found

used this for 50 years

S
Syd Dunton
Stubborn Bolts

I have a situation where two knives on my portable 12" planner need to be flipped in order to use the other cutting edge. Each of these two blades is held by six bolts for a total of 12 bolts with recessed hex heads. The tool included an attached long-handled Allen wench for the job.

I was able to loosed all but three of the bolts and could not, for the sake of me, loosed those three. I read on line about the best product for lubrication to loosen stuck bolts like my situation and ordered a small can of Kroil Penetrating Oil. I was pleasantly surprised with the smell, and the smooth consistency along with the easy application: it just flowed out.

Sure enough, those three stubborn bolts gradually loosed for me. I recommend this penetrating oil for anyone having a difficult time trying to remove bolts as I did. Even though my planner is kept indoors and showed no signs of rusting, I'm sure Kroil will work even on rusted hardware!

View full details