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.fantastic product!
Would Recommend[This review was collected as part of a promotion.] I was having trouble with tiny pinpoint leaks at the bottom of my radiator, so I picked this up to try, and I'm so glad I did. Rather than having to replace the entire radiator, the holes stopped leaking and kept me on the road! Well worth buying.
From Rislone
GREAT PRODUCT
Would Recommend[This review was collected as part of a promotion.] I have used this product in 3 separate vehicles and it has worked like a charm every time!
From Rislone
Absolutely amazing
Would RecommendI bought this a week ago because my radiator had a small leak on the side of it after I put this amazing product in you can visually see the coolant stop leaking out. Liquid magic.
From Rislone
Old tried and true
Would RecommendThis product is always been handy for me over the years especially you and hasn't preventive maintenance for possible leaks while traveling. This is always my quick grab go to to slow down any kind of coolant leaks that may be having within my cooling system that's pressurized. Although you can run it long-term in the system after you do your repair it makes for easy cleanup because nothing gets clogged.. I hope this product stays in the market for the rest of my life and beyond.
From Rislone
Work as it should
Would RecommendIam so Glad I used this save me a lot of time and money!
From Rislone
Great product
Would Recommend[This review was collected as part of a promotion.] I've been using this product for years and all of them. They work great for me and have saved me a lot of money over the years. I will continue to use them as long as I have vehicles.
From Rislone
GREAT PRODUCT
Would Recommend[This review was collected as part of a promotion.] I brought this to fix my radiator it got me back home and is still working
From Rislone
Radiator new out box again
Would RecommendBought this to keep from spending hundreds on a new radiator and it was the best move I ever did!
From Rislone
Easy to use
Would Recommend[This review was collected as part of a promotion.] I wasn’t so sure when I bought this product but it worked It save me a ton of money
From Rislone
Helped me in an emergency
Would RecommendHad a radiator leak while on a trip and this allowed me to get to a proper place for radiator fix.
From Rislone
The best solution
Would Recommend[This review was collected as part of a promotion.] I bought this product this week and got stop leaking my car radiator I recommend this product
From Rislone
Happy customer
Would RecommendUsed this product it worked like a charm I highly recommend this product
From Rislone
Vintage Tractor Radiator Leak
Would Recommend[This review was collected as part of a promotion.] I bought this to stop the leak on my Vintage Case VC tractor. Added to the radiator as specified and the leak stopped. Its been several months since I added it and still no leak.
From Rislone
Heater Core Leak
Would Recommend[This review was collected as part of a promotion.] Though most do not recommend risking clogging a heater core I decided to give it a try and have been pleased with the results on my 27 yr old vehicle. Heater core related leak had resulted in damp pax carpet but have not had the problem since adding the stop-leak.
From Rislone
Worked Like A Charm
Would Recommend[This review was collected as part of a promotion.] I am so pleased with this product. It seriously saved me a bunch of cash.
From Rislone
Works great
Would Recommend[This review was collected as part of a promotion.] Works as advertised. I would recommend this product.
From Rislone
This met my needs and lived up my expectations.
Would Recommend[This review was collected as part of a promotion.] This performed perfectly without clogging the radiator while saving me the trouble of removing the water pump and hoping for the best.
From Rislone
Great Product
Would RecommendI bought this Bar’s Radiator stop leak because I had a small leak in my Radiator, after following the directs on the bottle my radiator hasn’t had a leak yet. I also haven’t had to spend extra money on any coolant! Thanks Bar’s for making such a great product
From Rislone
Yes
Would Recommend[This review was collected as part of a promotion.] Used this on my 12 ford and it worked better then the shops repair!
From Rislone
Sealed a
Would Recommend[This review was collected as part of a promotion.] Help seal leak and saved me from a bigger job and alot more repair work
From Rislone