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.It works
Would RecommendI put this in my radiator a few months ago and its still not leaking.
From Rislone
no more drip
Would Recommendthis is a great product if you have a small leak. Big money saver. I reccomend it.
From Rislone
stop radiator on my car
Would Recommend[This review was collected as part of a promotion.] I bought it to get me home when on vacation i have used it before and i liked very much
From Rislone
Definitely works!
Would Recommend20 yr ago bought while stuck on the side of the road 20 to 30 minutes later I couldn't believe it I was on my way car continue to run absolutely fine just go buy it
From Rislone
Middle of nowhere
Would Recommend[This review was collected as part of a promotion.] We were in the middle of a local nature area and the radiator started leaking. We were 30 miles from town. I had a bottle of bars leak in the truck. Poured it in added some water and was able to get home. My wife was extremely happy.
From Rislone
Works great!
Would Recommend[This review was collected as part of a promotion.] I bought this to stop my radiator leak until i can replace the radiator. Product did its job and stopped the leak.
From Rislone
Pretty good
Would Recommend[This review was collected as part of a promotion.] my radiator had a leak so i threw this jawn in there and it was all good truss
From Rislone
Good stuff
[This review was collected as part of a promotion.] It really works I recommend this more than any other brand
From Rislone
Stopped Leak
Would Recommend[This review was collected as part of a promotion.] I bought this two weeks ago. My truck was losing water fast but I could tell where. This stopped the leak.
From Rislone
Got me home and bought me a lot of time.
Would RecommendLasted about 9 months! But as it says, not a permanent fix. We started leaking coolant on a road trip with 300 miles to go. Bought this at a rest stop and it definitely got us home. It’s been almost 9 months and I only just got my first new leak in the radiator. Definitely time to replace it but I’m impressed with how long the stop leak worked.
From Rislone
This Product has a good Idea with high visability
Would Not RecommendWhen you have a leak in your system of any kind its allways best to try and pin point the location but sometimes that is very hard to day. So putting sparkly material in the product was good thinking. At first Radiator stop leak does work and stops the leak,( after the time or two.). But if you dont keep your resivare or overflow tank clean you have small water jackets slowly clog to the point it will no longer cool the engine or lubicate. After driving weith this issue for so long its bond to c...
From Rislone
Great products
Would Recommend[This review was collected as part of a promotion.] I bought it because I had good luck with it in the past
From Rislone
Works good 💯
Would Recommend[This review was collected as part of a promotion.] I bought this 2 months ago and I'm still happy with it I bought six bottles and it's still doing good on the first bottle
From Rislone
The best
Would Recommend[This review was collected as part of a promotion.] Best product to use it work great and super fast can tell the difference already
From Rislone
Always works
Would Recommend[This review was collected as part of a promotion.] Have used this an automotive as well as heavy duty trucks such as semi trucks. That works great and then any application and I highly recommend it
From Rislone
Bars Leaks Radiator Stop Leak Works Good.
Would Recommend[This review was collected as part of a promotion.] Bars Leaks Radiator Stop Leaks Really Works Good.Very Well.
From Rislone
Works as advertised
Would Recommend[This review was collected as part of a promotion.] I'm a nutshell, had a persistent slow leak, added the radiator leak sealer, leak went away
From Rislone
Great product
Would RecommendIt's been about six months since I bought this product. It did exactly what it was Intended for sealed the leaks in my Radiator.
From Rislone
Great fix worked wonders
Would RecommendI bought some a few days ago my radiator was leaking bad I put a whole bottle of the stuff in and it Hasn't leaked since.
From Rislone
Great product
Would Recommend[This review was collected as part of a promotion.] This product worked great, it stopped a huge leak in my engine for a few months and it was a pretty big leak that it had fixed.
From Rislone