Kroil Aerokroil Penetrant - Rust Penetrating Lubricant - Corrosion Inhibitor Oil for Chains, Hinges & Stuck Metal Parts - Home & Industrial Use - Aerosol - 13 oz - 1 Pack (KS132)

I have to say many years tried various lubricants penetrating oils etc. etc. and stumbled upon this read the reviews did Internet searching and thought I would give it a try I have a class eight semi 1998 replace airbags and various other components throughout the suspension this is a long haul semi truck that goes all over the country with all the salts and the roads in the chemicals for many many years it gets harder to get fasteners apart especially in the suspension area however pre-coding these fasteners and areas and anything that needed to be worked on helped out tremendously even on the very stubborn fasteners that were not wanting to back off hit it again with a little more of this stuff and the impact wrench taking them off after looking at the fastener I can see why it was seized in there I don’t think I’ve ever wanna got it out unless I use the heating torch and various other tools more work to get it out but this stuff works great I’ll use it from now on

If you watch reviews from Project Farm or other misc tests on Youtube, this stuff never seems to come in at first place. HOWEVER, keep in mind that in all of their accelerated corrosion tests, the fasteners always came apart with no rust penetrant at all. In which case, why is a person using penetrant at all?This seems to work best in the situations where the fastener will break rather than move. It is a poor lubricant, but that's not what a rust penetrant needs to be.Downsides are the expense and I swear these cans are engineered with the weakest valve mechanisms ever. Tip a can on its side and the spray tip hits the hammer laying next to it, and the spray tip snaps clean off. I devised a crude "repair" for when this happens, but dang. They can use a bit tougher valve.

Hands down the best penetrating oil on the market!I've been working on heavy equipment for years now and have basically used every other penetrating oil on the market this is the best one no question!

When I was a young teenager learning how to wrench under the tutelage of my father I was introduced to Kroil. After I moved from home but before Amazon became an option I could not locate a new supply so I tried the other products offered by the local retailers. The stuff works better than any other product I have tried. My advice is to not rush the process. Whenever I can I give the oil several days to work its way into whatever I am trying to separate. For really tough cases, like body bolts, I use several treatments. The product is expensive but it works.

I've used may penetrating fluids for rusted, corroded fasteners and parts over the years. Kroil is the best, but you must remember one thing!, time is necessary! The longer you can keep soaking down the parts before attempting disassembly the better, no matter what you are using. It is expensive, I use it only on things that HAVE to come apart without breaking. On simple fasteners where you can easily use new ones I use cheaper stuff and if they break it is not a problem. It's funny how you can't find this stuff locally, it has cult type following, everyone uses WD-40, well it is good for some things but not for important assemblies.

This is a go to item. Well known for it’s ability to free rusted and corroded nuts and bolts. Delivery was too long

This product works; however, the push to spray dispenser top was missing.

As a penetrating oil it actually works, check the YouTube tests. When you break a bolt loose the threads are wet. PB and most others won’t do that. The rub is that you will pay dearly for a can. Worth every single penny. You’ll get fasteners loose that you wouldn’t think possible, or would have required a torch. It’s won’t perform magic, but outperforms everything I’ve tried in a can. You’ll never touch the can of liquid wrench or Pb again. Kroil can be used sparingly as well, so that makes the value proposition a little better.