Kroil Original Penetrating Oil with SprayTech 360° Nozzle & Straw (Aerosol Spray-13oz Can-Single) | Every Drop, Every Angle, Even Upside Down | Penetrant for Rusted Bolts, Hinges, Chains (KS123ST)

If you really need to break something free, use this. Works great, but the smell is strong, so ventilate accordingly. Also, be gentle with the button, it will splash back when sprayed too hard.

I heard this stuff recommended over PB Blaster for working on vehicles on YouTube. Seeing how I live in the rust belt such as Wisconsin. I thought to give this a try.The stuff does work. My only complaint isn't the smell of the product that's kind of sweet. It's the sprayer itself.It's kind of fragile. And easily pops off the top of the can. But so far,I've been easily able to reattach it.

Kroil, Is well known by mechanics, Gunsmiths, and other people that may have to work with rust or frozen screws, nuts and bolts. The oil is also available in a can, but the oil creeps so well that eventually it will creep out of the seam of the can so the can needs to be stored in a workshop or somewhere where leaks will not be a problem. I ordered the aerosol container because I have not heard about problems with Leaking, and the spray nozzle allows me to get the oil close to the parts that I need to loosen. It’s not cheap, however. I received it very fast and in great condition and I am very pleased.

Product is not usable. Vendor contacted. I sent pictures. No response.

A little bit goes a long way with this penetrating oil. This bottle in particular with the swivel down stem is very nice. The nozzle doesn't fall out of the tip like other styles. The oil itself is quite powerful and helps remove stubborn fasteners.