WD-40 Specialist Rust Release Penetrant Spray

2011 2500 HD, 180k miles, ORIGINAL shocks and Minnesota rust awaiting me. As you can see in the picture a lot of rust. I wish I took before pictures but just imagine so much Rust on the bolts that I could barely see the outline of the bolt against the hanger.I sprayed the WD-40 on early in the morning and let it sit for about six hours and then did it again on all four bolts. In the evening time I started the job that I thought would be a nightmare ready to fight the battle.I was using good quality impact drivers, which certainly will help but nonetheless, I expected the worst when I started cranking on the bolts. To my astonishment, all four broke free pretty easily and came out practically like New.This stuff works!!I replaced both shocks in about 20 minutes with only average levels of discomfort. Considering how they looked before I honestly can say I was astonished.Must have. Get it. Soak it. Enjoy it.

Works great and reasonable price.

Smart Straw, Smarter FixI’ve used a lot of penetrating oils over the years, and this WD-40 Specialist Penetrant really stood out as one of the better ones. The “Smart Straw” design makes a surprising difference—you can flip it down for a wide spray or snap it up for a precise stream, which saves both time and waste. I used it on a stubborn garden hose fitting, some squeaky hinges, and even a rusted nut on my lawnmower, and in each case it loosened things up quickly. The formula seems to work fast, cutting through rust and corrosion so you don’t have to force anything and risk breaking parts.Another big plus is its versatility. I felt comfortable using it not just on metal, but also around plastic and rubber parts where I’d normally hesitate with harsher sprays. It dries fairly cleanly and doesn’t leave a sticky residue that attracts dirt, which is often a problem with cheaper sprays. The can size feels generous and should last through many household and garage projects.If I had to nitpick, the smell is strong—like most products in this category—so I recommend using it outdoors or in a ventilated area. But in terms of performance, it does exactly what you want: frees things up without fuss.Bottom line: A reliable, fast-acting penetrant that’s made my life easier on everything from locks to mower parts. The Smart Straw alone makes it worth choosing over generic brands.

This is an excellent option for small home repairs at a very good price. My husband used it to fix an unbearable noise coming from the garage door. What could have been an expensive repair was solved with this simple, inexpensive product.It works effectively, only requires a small amount, and has many uses around the house. Highly recommended.

For most equipment requiring lubrication, WD-40 is fine. Where it isn't the best they tell you about. For example, I need to lubricate my sliding glass door bottom occasionally. WD-40 only works for while - Vaseline works longer, but it's use for something like this is noted. One big beef though is that the spryer mechanism on my my last three cans of Wd-40 failed before the end of the product! Thus the 4-star and not 5. Carefully read it's uses and ensure you are using the right lubrication.

I usually just search for the best deal on penetrant with no brand loyalty. Got this because it was cheaper and it’s worked great. Doesn’t smell like other brands and has the two-way tip which is good.

Its WD-40, what more do I need to say? Great product, easy to apply with the straw on the sprayer and great value for the cost.

Works great.