Ratings & Reviews for Bar’s Leaks BAR'S LEAKS Cooling System Radiator Stop Leak Multi-Purpose 11 oz 4 Pack
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this radiator leak sealant for delivering fast, reliable results on small to moderate coolant leaks. Most report dramatic improvements—leaks stopping within 25 miles of driving, coolant no longer dripping, and odors disappearing within days. Many describe it as a lifesaving emergency fix that kept them on the road and avoided costly replacements. Reviewers consistently note sustained effectiveness over months, with some reporting sealed leaks lasting 4 to 9 months. Users appreciate its ease of use requiring no mechanical expertise and no system clogging. A few mention it's not a permanent solution, but the overwhelming consensus is that it works as advertised and delivers exceptional value.
Customer review summary generated by AI, including incentivized reviews.Radiator stop leak
Would Recommend[This review was collected as part of a promotion.] Radiator in my 1959 chevy truck had small pin holes in core and few in tanks. Poured bottle of bars Radiator stop leak after flushing Radiator. I did have to put 1/2,of a 2nd bottle and 7 years later Radiator still doesn't leak
From Rislone
Great product
Would Recommend[This review was collected as part of a promotion.] I bought this and it worked like a charm no more leak
From Rislone
Hey folks,this stuff really works!!
Would Recommend[This review was collected as part of a promotion.] One night I hit a piece of concrete on the highway, while driving my Mitsubishi mirage g4,the next morning while getting ready for work I noticed a small coolant leak in our driveway. I topped off coolant and headed in to work,while having lunch with my coworkers I mentioned what happened the night before and the new leak from the radiator. James my coworker, suggested this product as it solved his radiator leaking problem last year. On the wa...
From Rislone
GOOD STUFF
Would RecommendI’ve actually used this a few times and it does definitely work with smaller leaks!! It for sure helps in a pinch!!
From Rislone
Actually works
Would Recommend[This review was collected as part of a promotion.] I bought this for my son to put in my car & I'm amazed that I bought something that actually works. Since I don't know to much bout this have to take my son's word & so far haven't had anymore issues. Will diffently try other products as needed. Hopefully won't need to try any other products😆😊
From Rislone
Awesome product!
Would RecommendProduct did exactly what it was supposed to do until the car got fixed.
From Rislone
Wow! BarsLeaks Radiator stop leak.
Would Recommend[This review was collected as part of a promotion.] My wife had this waiting on me when I pulled in from work Wednesday evening. I told her that stuff will never work. "Not quiet that nice though", I'm ashamed to say. Anyhow low and behold, no more leak. Thank You Guys. A happy customer.
From Rislone
Radiator Stop Leak
Would Recommend[This review was collected as part of a promotion.] I bought the Bar's Leak Radiator Stop leak and its been working for over 3 years.
From Rislone
Works great
Would Recommend[This review was collected as part of a promotion.] Save me a lot of work and money My local Napa store recommended it
From Rislone
Radiator leak repair
Would RecommendNever used before , thought I'd give it a try It's been a month ... No leaks . Everything seems good
From Rislone
Great product
Would RecommendEasy to use trustworthy company got the job done. It also was a great price. Recommend it.
From Rislone
Awesome product
Would Recommend[This review was collected as part of a promotion.] I bought this 2 months ago. Worked amazing like it had said it would
From Rislone
Best product
Would RecommendI bought this about two weeks ago, radiator has a leak and by far the best product I have ever used
From Rislone
Great product
Would Recommend[This review was collected as part of a promotion.] Purchased this product and it worked fabulous. I use all your name brand products
From Rislone
Easy to use.Good product
Would Recommend[This review was collected as part of a promotion.] Been using Bars products for 50 years plus and all products have been very good and most important is they work like they should.
From Rislone
Great product
Would Recommend[This review was collected as part of a promotion.] This really helped me out in tight spot my radiator was leaking and I was out of town and nobody to fix it. I use one bottle and it took care of it and it's been over a month since then
From Rislone
Works great to get you by
Would RecommendWorked to help us get my daughter's car home from college so we could get it replaced.
From Rislone
Awesome product
Would RecommendI bought this product a few weeks back for my leaking radiator in my 83 Ford LTD. It worked perfectly to stop the leak I had.
From Rislone
I was told by a friend this was the best!
Would Recommend[This review was collected as part of a promotion.] This stuff worked great! I loved it. If this ever happens to anyone I know i will surely send them your way!
From Rislone
Really works
Would Recommend[This review was collected as part of a promotion.] Amazing the stuff fixed my head gasket best stuff ever
From Rislone