Bar's Leaks Liquid Aluminum Radiator and Heater Core Stop Leak. 6 Pack,1186-6PK

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!

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.

Worked OK still leaks a little

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.

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!

I used this on my older Pontiac grand prix sedan. I placed it in my radiator hoping it would seal a leak coming from my radiator. After a week of driving in town and just enough to prevent the car from getting to hot, I still noticed that the product was not sealing the leak to feel satisfying and safe. If it would have sealed the leak after two applications withing the first few days, I would have felt the seal was solved. I feel my older car was just in need of a new radiator and as good as this product may be, it just did not do it for my car. I feel better knowing I have a new radiator in my car, but this product may help your situation. You can't go wrong with a guarantee on the bottle.......

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.