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 Recommend[This review was collected as part of a promotion.] This product does what it says. It does wonderful product I would recommend.!
From Rislone
Worked great for me
Would RecommendHad a pinhole leak in a project and it sealed it up and didn’t leak anymore
From Rislone
Recommended to me but did NOT work
Would Not RecommendDidn't work. I have a V6 engine with a small heater core leak. The windshield fogs up and gets an oil film build up on that that I have to clean off from time to time. Trusted mechanic told me this stuff was the best and highly recommended it so i bought a bottle. Unfortunately, it did NOT work for me. A month later and I'm still having leak issues.
From Rislone
Emergency fix worked great
Would RecommendUsed to stop radiator leak at night coming home from work.Stopped the leak,got home and replaced radiator.
From Rislone
Works every time if your system is still in tact.
Would Recommend[This review was collected as part of a promotion.] I've used this product since I was a teenager, and the only time I've ever seen it incapable of repairing my problem is with severely damaged systems. It's been great and the price ain't bad!
From Rislone
Easy
Would RecommendBought this a week ago, easy application and worked great.
From Rislone
Worked for pin hole leak
Would RecommendWorked as advertised. Had a small leak in radiator and it patched it for a few months
From Rislone
Worked well for my Jeep cherokee
Would Recommend[This review was collected as part of a promotion.] I have owned many jeeps in my life and seems that their radiators like to crack in the winter time. I’ve used this product a couple times and has gotten me by in a pinched until I could get the radiator replaced
From Rislone
Did the job
Would Recommend[This review was collected as part of a promotion.] Slapped it in the car in the last oil change and it did as advertised
From Rislone
Great product
Would RecommendGood product I have used these products alot and will continue to.
From Rislone
Great product
Would Recommend[This review was collected as part of a promotion.] Happy with the outcome of the product. Would use it again.
From Rislone
Works excellent
Would Recommend[This review was collected as part of a promotion.] I need it twice and it's worked both times - two different vehicles
From Rislone
Does the job well
Would RecommendI had an annoying radiator leak for several months, requiring my attention every couple days. Before going through with a replacement, I tried a container of Bar's Leaks Radiator Stop Leak. It's now been almost two months and I haven't had to add a drop to the radiator. I see no need to replace now. Highly recommend!
From Rislone
it works!
Would Recommend[This review was collected as part of a promotion.] I've used Bars Leaks products over the years and found them to be dependable - they do what they say it will do. I used the Radiator Stop Leak stopping my radiator leak quickly. Thanks for making a product that works!
From Rislone
Kept my wheels on the road
Would Recommend[This review was collected as part of a promotion.] When I had doubts that I couldn't find anything to fix my problem, I tried this product and it was the best decision I made. I was able to keep my car on the road and take care of everything I needed to in my daily life
From Rislone
Bars Leak got me home!
Would Recommend[This review was collected as part of a promotion.] 5 hours from home with a cracked radiator!! Added Bars Leak for radiators and got home with no problem. Bars Leaks saved the day and a bunch of $$$ Thank you, Bars Leak!
From Rislone
Great sealer
Would Recommend[This review was collected as part of a promotion.] Radiator was leaking and fixed my problem I would recommend to everyone.
From Rislone
Works great
Would Recommend[This review was collected as part of a promotion.] Used it and worked great and still going strong with no leaks
From Rislone
Amazing product!
Would RecommendI bought and used this product a couple of weeks ago and I am so thankful I did. Since using it, my car runs like brand new!!!!!
From Rislone
Good produc
Would RecommendHappy ford this produc and recommended for my friends
From Rislone