Bar's Leaks Cooling System Stop Leak Antifreeze and Coolant, 11 oz

My radiator coolant was leaking from a spot and after I used this, I haven’t had to refill it again (after purchasing 4 large non-concentrated containers and refilled until they were all gone and my radiator kept going bone dry).

i use it in 1965 international pickup-never had a leak!!!

Pulled up to the gas station & upon filling up the tank i realized I had somehow got a pin hole leak in my radiator that was squirting out onto the ground. Walked into the gas station & found this. I had used other products by these guys & knew I could trust them to get me home. Followed the directions & by the time I got home it stopped leaking. Went to the the following morning & have yet to have an issue with the radiator leaking. Thanks AGAIN guys!

This help stop my coolant leak with just one bottle. I was so happy I could drive now knowing I don't have to keep an eye on my coolant levels anymore. Awesome product.

[This review was collected as part of a promotion.] Used this product on my 540B John Deere log skidder and it sealed the radiator up snug as a bug in a rug

So when I bought this I was very skeptical that it wasn't gonna work like the other stop leak products. But it work way better than expected. It worked darn near instant and it sealed off several small pinhole leaks and 1 lg crack. It held for 6+ months when I was able to find a replacement radiator. I would recommend this product to everyone who is need of a easy fix for a 6 Months or sooner. I would also buy and use any other products made by this company. Bar leaks repair liquid s do a great job hands down!!

[This review was collected as part of a promotion.] I bought this about 2 weeks ago and it fixed my leaking radiator and I haven't had a problem since using it

Excellent product. For minor leaks in hoses or fittings, not for large leaks or head gaskets. Have a cracked.. MINOR.. Crack on my timing chain cover where coolant passes through on my 7.3 power stroke ... Followed instructions, used 2 bottles due to having 8 gallons my cooling system....FIXT!

[This review was collected as part of a promotion.] Bought it and a local parts store to use in my truck and I have not seen a leak since using it

It stops the leak, but it also clogs the overflow hole and hose at the cap. I noticed the upper radiator hose was collapsed after driving and letting it cool a bit. Upon removing the cap, air went back in the system and upper hose expanded to normal - which is when I noticed the material from the product clogging the overflow hole and tip of the overflow hose. I removed the clog once, but after driving just 2-3 miles, it clogged the overflow hole again. Ended up ordering a new radiator, since this is a temporary fix anyway. Just be aware that this might happen and overheat the engine, especially if you have too much fluid or it's overflowing at all. FYI, my fluid is at the max line and this is a Chrysler under 10 years old, and the overflow hole is about a quarter inch in diameter.