Bar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz

I just bought the Bar's Leaks Liquid Aluminum Stop Leak and I’m truly sastified. After noticing a coolant leak from my car on my driveway and when I got to work, I was afraid that i might break down on the highway going to work or going home from work. At first, I was skeptical about using a stop leak product since I’ve never used one before nor did I hear anyone give me feedback about their experience with any leak but this one honestly exceeded my expectations. I am 100% happy with the results, I haven’t seen any leaks. I will top my coolant reservoir with coolant and see if the reservoir itself will decrease in coolant since I haven’t seen any drips under my car.It was straightforward, add the bottle into the reservoir since I didn’t have access directly to the radiator on my car. It has instructions on the bottle on how much and where to add the liquid to. My engine temperature is normal when driving and I’ve never seen it go up ever since adding this leak liquid. I can say I’m satisfied and for reference, I added full bottle into my reservoir and my vehicle is a fairly newer Jeep Grand Cherokee!

Yeah I think you can get some years ago my pickup truck started spraying coolant all over the place under the hood period I was traveling, and I was not in a position to replace the water pump. So I went to Walmart and looked at all the radiator stop leaks they had there. This was the only one that offered a money back guarantee. I did not care about the money back guarantee, but it made me think that they must really believe in this product.I told my son that I had been using radiator stop leak products for over 50 years, and they had never really worked. So he asked me why I was doing it now. I said because I didn't have any other choice.And then, to my utter astonishment, this product worked. After a few minutes, all the water spraying under the hood stopped!This is years later, and I still haven't replaced my water pump. I have had to refresh this product once or twice by adding more to my cooling system, but who cares. I always travel with a full bottle of this in the truck somewhere!

After use the leak increased in speed. I can not be sure this was related to that but it did happen at the same time. I drove 2 hours after use. I do not think the radiator itself had any leaks and I put in a pump and new hose last year which helped greatly but didn't stop the slow leaking. A rate of every 3 months; I was hoping this would reduce the leak rate further but things got worse; it went back to how bad it used to be. Like I said, I don't think I can link the problem to this product, which is simply metal flakes in liquid which hopefully get jammed into leak. What I did notice is that the level never goes down when driving but after sitting a while the level goes down; so this could be helping during operation but when the pressure drops this stuff no longer plugs the leak so it still is leaking. The fact it is worse I do not think is connected. That is my theory on what is going wrong. I think this product is a clever solution to mitigate leaks but unlikely to solve problems - which is the expectation I had when I bought it. I may buy it again.

This stuff works! I am very impressed. It saved me money and time. I usually don't write reviews. I had it in my vehicle for about a month. I had a radiator leak. It was a small one near the hose going into the radiator. My brother put it in, no more leaking antifreeze or overheating.

If you have older vehicles and loose any water, use these stop leak products from Bar's or other vendors. These work well for blocking any loss of water and assure your water level will remain high. It seemed like I might be losing some water and I'd refill it, but adding a stop leak always slows down or stops any lose of coolant, so it's well worth it. If you get a head gasket leak, you'll have to replace the head gasket eventually, but here again it helps slow any leakage.

I have used Bar s head gasket sealer before with success on my old tacoma. Used this on my acura rsx had original radiator with 300k. The leak was coming from the top of the radiator . A few inches i tried to patch it with Jb weld and added this stuff. Worked for about a week. Did slow things down but still leaking coolant . Would only recommend on putting in old cars. If not replace your radiator. I end up replacing my radiator this stuff needs to be flushed out now. Little metal flakes in coolant

I love this stuff...it works perfect on small coolant leaks on a lot of my old tractors...but now I have found another use...if you have a tire that keeps slowly going flat...add a bottle or 2 of this and it works perfect..

If I could give this zero stars I would. Never, EVER put this cr*p in a Honda engine since you will most likely be getting a tow to your mechanic. Sent RPM's soaring and surging...got the car to spit some of it out by running without the radiator cap but only helped a little and did not undo the harm. Had to get a AAA tow to my mechanic and he had to clean out a bunch of parts and do a drain, deep clean and refill. Did a bunch of research before putting this in because I do care for my aging vehicles and did not get the impression this could potentially destroy my engine so gave it a shot but wish I never did. Right after taking the plunge I found a mechanics blog completely despising this product saying it does not agree with Honda's (why couldn't this review show itself sooner??) that's just my luck in this instance.