Kroil Aerokroil Penetrating Oil, 10 oz. aerosol (AEROKROIL)

Worked Great. Arrived as promised.

I have been using this product at work for a long time. I have used it enough to know that if you you put this on something and let is soak for a bit, and it still does not come apart, get a torch or saw out because that is the only way it will come apart. This stuff is pricey for sure, but worth it. It chemically has a molecular size that is smaller and better for soaking into corrosion and rust, so much better than the kerosene based WD type products. All of the other reviews that are not a 5 star are not about the product is is about how it was damaged in shipment.

Do not waste your money on any other penetrating oil. This is the only one you need. It is magic...worth every penny.

This stuff is a god send. Couldn’t get my o2 sensor off even with a jack and two applications of this had it coming right off. Seriously recommend

Restoring a 35 year old Mustang GT and had to replace the old headers. The bolts were seized up good. Was going to WD40 them for several days and have another go when I heard about this stuff. Took a chance and the first thing I found - at the cost of a star - was that the application straw did not fit the nozzle and none of my other straws would, either. This is a pretty big deal as it made me shoot the bolts at long distance and I wasted a lot of overspray. Working on several things at once and this made everything wet, which is not appreciated. That said, it worked like a champ. I've been a back yard mechanic since the '70s and have used everything - oil penetrants like WD, liquid wrench, the torch - and burned up a lot of time and sweat - old cars require bloody knuckle mechanics. But this stuff - they spun off like brand new. It evens works faster than I expected - doesn't really require much soaking time to get in there. It'd be five stars but for that blasted straw. Seems a pretty amateur mistake for such a good product. But, mess, expense and all - I'm a customer for life.

There's a reason this product is more expensive then its commonly used counterparts - it's superior to all the others. A little goes a long way so it is not much more expensive in the long run really. I always keep some on hand.

I love this stuff. Not as good with stuck bolts as PB Blaster but it smells great and isn't so nasty. It works well too. I have used it recently to lubricate all fasteners when I put a new windshield washer reservoir and pump in my 2001 Suburban. Bolts and screws threaded on like butter.

This penetrant is so good, I was able to get loose 25 year old exhaust bolts like they were brand new, it did not put up a fight at all they came right out no problem. I soaked a week in advance and sprayed it again 2 more times in that week period. It got all the way into the threads. Highly recommend, I don’t think there’s a better penetrant out there

Works like a dream

I had a particularly difficult union to remove with severe corrosion on it. Tried well known penetrants but they did not work, so cleaned them off with a solvent cleaner and applies AeroKroil. After three days of reapplying it, the union was able to be removed. Brilliant product!

Used my 'normal' penetrating oil on a seized bottom bracket on an old Halfords steel bike. Put the bottom bracket in a vice and turned the frame, absolutely no joy. Bought some of this, a squirt a day over 4 days, then the same vice technique and it came loose first time. Expensive but worth it for an amazing penetrating oil.

As a aircraft mecanic. Might be the best penetrant. I use it at my job and at home. 10/10 would recomand.

Worked to loosen 18 years of rust from a brake line connection using three applications within one half hour. Great product.