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⚙️ Unlock stuck parts faster with Blu Torch power!
WD-40 Specialist Rust Release Penetrant Spray (11 oz) features Blu Torch technology that penetrates rust twice as fast, with a SMART STRAW for dual spray modes. Designed for industrial-strength performance, it safely loosens rusted parts while leaving a protective anti-corrosion layer on metal, plastic, and rubber surfaces. Trusted by professionals for over 65 years, this spray is a must-have for anyone tackling tough mechanical challenges.











| ASIN | B00631GQGW |
| Best Sellers Rank | #26,727 in Automotive ( See Top 100 in Automotive ) #48 in Care Corrosion & Rust Inhibitors |
| Brand Name | WD-40 Specialist |
| Container Type | Can |
| Customer Reviews | 4.8 4.8 out of 5 stars (18,533) |
| Flash Point | 40 Degrees Celsius |
| Global Trade Identification Number | 30079567300008 |
| Included Components | -- |
| Item Form | Spray |
| Item Type Name | --- |
| Item Weight | 11 Ounces |
| Liquid Volume | 11 Fluid Ounces |
| Manufacturer | WD-40 |
| Material | Plastic |
| Model Number | 30000 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 300004 |
| Recommended Uses For Product | loosening tight or rusted parts, facilitating the smooth movement of mechanical components, and unlocking jammed mechanisms |
| Specific Uses For Product | Loosening Rusty Parts, Easing Removal of Nuts and Bolts, Improving Penetration in Tight Spaces |
| UPC | 079567300007 |
| Unit Count | 1 Can |
| Viscosity | Low viscosity range (e.g., 10-30 centistokes at 40°C) |
M**Z
A buen precio
Buen producto
A**K
Perfect for any rusty or stubborn screws and bolts.
Is there anything WD-40 does not resolve? Used this on a couple of tire bolts that were ver stubborn. Sprayed, let is rest for a few minutes and they came off easily. Great product. Great value for the money.
J**N
Industrial Strength Penetrant That Gets Into the Tough Spots Every Time
This WD-40 Specialist Penetrant is a rock-solid 5-star product that belongs in every garage, shop, and toolbox. The fast-acting formula works quickly on rusted bolts, frozen nuts, seized locks, and corroded threads that would otherwise require a breaker bar and a lot of frustration. It penetrates deep into tight threads and hard-to-reach areas, breaking up rust and corrosion without damaging the surrounding metal, rubber, or plastic—which is a big deal when working on delicate or older components. The Smart Straw applicator is excellent for switching between a broad spray and a precise, targeted stream exactly where you need it, with no straw to lose track of. Whether I'm working on the RV, vehicles, or shop equipment, this penetrant has bailed me out on more than a few stubborn fasteners that nothing else would budge. Industrial strength performance in a convenient aerosol can—it does exactly what it promises and does it well every single time. Highly recommended.
S**S
Works perfectly, but a little goes a long way!
I am giving this WD-40 Specialist Penetrant a full 5 stars. It works very well on my doors and cabinet doors to keep the hinges moving smoothly. You really only need a tiny amount because a little goes a very long way! My only minor issue is the size of the product. Because you use so little of it at a time, the 11 oz can is almost too much for basic household tasks. If there was a smaller can available for a lower price, I definitely would have bought that instead. Overall, it is an excellent and highly effective product to have around the house. Pros: Works perfectly on squeaky doors and cabinets. Very fast-acting and a little goes a very long way. Cons: The 11 oz can is quite large for basic needs; a smaller, cheaper size would be ideal.
M**K
Not bad at all!
Most of the repairs made for vehicles and things around the house like mowers are done by myself. The need to loosen a rusted fastener or nut arises often. My practice in the past was to use a combination of applied heat and regular WD-40 or some other lubricant. A friend suggested I try this WD-40 penetrant and let it soak in to see if I noticed a difference. I bought this and tried it on a repair job on my old mower. Years of use ensured the bolts I wanted to remove was solidly rusted and immovable. On one bolt I sprayed the regular WD-40 and the other I tried this new-to-me product. Both were allowed to soak for half a day. (There may be an ideal soaking time, but I've not found any data that is universal for all applications.) When the bolts were broken loose there was an immediate difference between the two products tested. The penetrant served to loosen the bolt MUCH better and broke loose with very little effort or leverage. The other required a measured amount of force, and the wrench slipped off twice before the bolt came loose. I was convinced of the value of this product. Since then, I've used this routinely on cars, motorcycles - you name it. One star was deducted due to the fact that there were some situations where no amount of spray and no amount of soaking served to loosen bolts/screws. Multiple times in fact. I could not identify the factors that made some work and others fail to loosen. There are times when the application of the spray, no matter how thorough or how long I let it sit, just made no difference at all. Not a failure in my opinion, but the product is not full magic working on every stuck fastener. It is my primary go-to and remains a vital component in my maintenance tool set.
Trustpilot
1 week ago
4 days ago