Best Penetrating Oil & Rust Inhibitor Spray | WD-40 Specialist
WD-40® SpecialistWD-40® Specialist
Penetrating Oil Spray

Rust Release Penetrant Spray


  • Extra-penetrating Blu Torch Technology
  • Fast-acting
  • Ideal for use on nuts, bolts, threads and locks
  • 50-state VOC compliant

11 oz Rust Release Penetrant Spray UPC 079567300007
6 count case Order # 300004

WD-40® SPECIALIST® RUST RELEASE PENETRANT SPRAY penetrates deep into crevices, threads and seams to break the bonds that hold stuck parts together.

Our penetrating lubricant also leaves behind a protective layer and helps prevent rust and corrosion from re-forming. Containing Blu Torch Technology, a proprietary blend of synthetic additives, our rust remover spray quickly goes to work on rusted nuts, bolts, threads, locks and chains. WD-40 Specialist Rust Release Penetrant Spray frees rusted parts 50% faster than the leading competitor. It is 50-state VOC compliant and safe to use on plastics, rubber and metal.


The test and what it means: To determine the penetrating ability of a fluid, a large nail is used to evaluate how quickly and completely the fluid will move up a vertical surface. WD-40 Specialist Rust Release Penetrant Spray with Blu Torch Technology travels up a nail 50% faster than B'Laster! WD-40 Specialist Rust Release Penetrant Spray works fast to free rusted bolts and other stuck parts.


The test and what it means: This test is used to measure the level of corrosion protection provided by a test fluid under extreme conditions. While B'Laster treated metal experiences 90% corrosion after 5hrs, WD-40 Specialist Rust Release Penetrant helps prevent rust and corrosion from re-forming even in rust susceptible environments.


For the last 36 years of turning wrenches, we have tried numerous products on the market to remove rusty retainers. None have been as successful as the WD-40® Specialist® Rust Release Penetrant Spray. It was amazing how the rust released and retainers were removed without delay. There is no doubt in our minds that we have found the perfect solution to rusty retainer problems.

Dennis and Carol Roberts
Owners of Roberts' Family Motorsports
Camby, IN

I had a bolt rusted big time on my bike, sprayed it, it came off in a couple of minutes!

Michael D.
Assistant Manager, Quaker City Motor Parts
Philadelphia, PA

Used it on a frozen toilet shut off valve. Valve was frozen for years, sprayed it on and waited 10 minutes and the handle started turning

Michael D.
Assistant Manager, Quaker City Motor Parts
Philadelphia, PA

I used it on exhaust manifold bolts. Metal to brass bolts that were CORRODED. I was very SUPRISED. I have always used P'Blaster and WD-40 Specialist out PERFORMED it.

Kenny I.
Master Technician, Sylvan & Cleveland Auto Center
Atlanta, GA




WD-40 Specialist Rust Release Penetrant, 11 oz. 4.5 5 2 2
Works Great! I used WD-40 Specialist Rust Release Penetrant on the brake bleeder nipples on my '69 Plymouth GTX. They were frozen with rust, but after hosing them down with this product and tapping them gently with a hammer (vibrates it in!), I was able to loosten all 4 of them without breaking any offf... Sah_Weet! :) January 10, 2013
this thing works man, i love it October 10, 2012
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