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.Works great!
Would RecommendMy wife bought this for our 2013 Chevy Traverse about 6 months ago, to be honest I had my doubts I didn't think it was going to work. However, to my surprise its sealed the leak quite well and has held this long so I highly recommend it.
From Rislone
Works great
Would Recommend[This review was collected as part of a promotion.] I bought this to repair a leak and so far so good!
From Rislone
Great temp fix!
Would RecommendI was stuck on the side of the road with an overheating engine due to a radiator leak. I was able to get to the parts store and pour this in and it sealed it enough for my car to get home and worked on!
From Rislone
Great product
Would RecommendI have used this product in a hay hauling truck till I could get it fixed, stopped leaking for several years.
From Rislone
It just works
Would Recommend[This review was collected as part of a promotion.] I have used this a couple different times over the years and it has always worked great.
From Rislone
Works in a pinch
Would Recommend[This review was collected as part of a promotion.] Wouldn't recommend for a long term fix but it'll get you through till then.
From Rislone
WORKS GREAT
Would Recommend[This review was collected as part of a promotion.] TRIED IN MY 1997 JEEP WRANGLER SPORT AND IT WORKS GREAT STOPPED THE LEAK
From Rislone
Great stuff
Would Recommend[This review was collected as part of a promotion.] Helped me out bigtime and got me back on the road!
From Rislone
Oldie but A goodie
Would RecommendEvery time I've had to use this product, it has never failed me. The pellets fill all the little pinholes, and solve my coolant leaks.
From Rislone
I made it home!
Would RecommendI was weary of using any product to fix the radiator. I was about 4 hours from home. It took a minute with a few cranks, and then I was back on the road. I made it home!
From Rislone
Rislone radiator stop leak
Would Recommend[This review was collected as part of a promotion.] Add a radiator leak on an older Subaru. Wanted to try this because of the cost as opposed to dealing with a radiator replacement right now. This stopped the leak pretty immediately. Took a few hours and when I checked it, it was completely dry underneath the car. Phenomenal product.
From Rislone
Works great
Would RecommendI have used this on several vehicles over the years for radiator leaks. It has always worked for me. Highly recommend.
From Rislone
Worked Great
Would Recommend[This review was collected as part of a promotion.] Used this to fix a small coolant leak on my 96 Grand Cherokee and it worked great. No more leak that was somewhere I couldn't see solved a lot of frustration. Thanks.
From Rislone
EXCELLENT RADIATOR STOP LEAK
Would RecommendMY VAN IS 15 YEARS OLD AND THE RADIATOR STARTED LEAKING AT THE SEAMS. I TRIED THIS PRODUCT AND THE LEAKS STOPPED. THANK YOU BAR'S LEAKS
From Rislone
Radiator stop leak works great
Would Recommend[This review was collected as part of a promotion.] I bought this last week. My radiator was leaking and it don't leak no more. Great stuff!.
From Rislone
Leak stopped
Would Recommend[This review was collected as part of a promotion.] I bought this to get me home when my radiator end cap started leaking. I made it home and for the most part it's stopped.
From Rislone
Does what it says
Would Recommend[This review was collected as part of a promotion.] Work great stopped the leak now I can drive my car again
From Rislone
Highly Recommend
Would Recommend[This review was collected as part of a promotion.] I sell auto parts and highly recommend this product to any customer. I have personally used many Bars products and recommend them all!
From Rislone
It just works!
Would RecommendOver the years I have used this product multiple times on my older Mustangs. I recommend stop leak to everyone I know who has a leaky radiator as either a temporary or long term fix! It is simple and it just works!
From Rislone
Stop leak
Would Recommend[This review was collected as part of a promotion.] Used Bar's leak for a leaking radiator on my 1995 S10 grabed a bottle followed the instructions it's leaking no longer would highly recommend this product!!
From Rislone