Ratings & Reviews for Bar’s Leaks Bars Leaks Liquid Aluminum Radiator and Heater Core Cooling System Radiator Stop Leak 16.9 oz
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this leak sealant for effectively stopping radiator and heater core leaks within minutes or after a short drive. Most report dramatic results like "leak completely stopped" and "sealed up my radiator quick," calling it a life saver. Reviewers consistently highlight its affordability and ease of use—simply pour and drive without tools or professional help—often saving hundreds on repair costs. Many report sustained success over weeks or months, with some using it repeatedly over years for older vehicles. A few note it works only for minor leaks, not major damage, but overall customers strongly recommend it as a reliable temporary solution.
Customer review summary generated by AI, including incentivized reviews.Not nought information provided
Would Not Recommend[This review was collected as part of a promotion.] The instructions were pretty vague, it wasn't for me.
From Rislone
Working excellent
Would RecommendBought in a hurry half expecting it not to work but working exactly as described
From Rislone
Worked Great
Would RecommendI was in PA on fracking job and a little bitty rock chip so tiny put leak in radiator, pin hole leak I used two bottles to get me through next few days and it worked great I got to finish the job without loosing money and afterwards had everything replaced new radiator product worked great for my situation
From Rislone
Liquid gold...but aluminum
Would RecommendThis stuff is worth its weight in gold or aluminum if you must 🤭 Works great and quickly too!
From Rislone
Works fast
Would Recommend[This review was collected as part of a promotion.] Put it in and right away the leak stopped. It lasted a few months till summer came. Its amazing
From Rislone
The best product
Would Recommend[This review was collected as part of a promotion.] I bought this a few days ago and it worked perfectly glad I did so happy with this product
From Rislone
Save hundreds!
Would Recommend[This review was collected as part of a promotion.] Followed instructions and it seems to be working. Will use again.
From Rislone
Stopped the leak
Would Recommend[This review was collected as part of a promotion.] I've bought Bar's plenty of times before and it's one that I trust. If definitely helped stopping the leak. It's easy to use also.
From Rislone
Great product
Would RecommendI bought this last week for my truck to stop a radiator leak I put only half the bottle in and stopped it right up no more leaks highly recommend
From Rislone
Great product, works as advertised.
Would RecommendI've used this several times and it always came through.
From Rislone
Great Product!
Would Recommend[This review was collected as part of a promotion.] Bar’s Leaks Liquid Aluminum worked better than expected. The leak slowed down quickly after following the instructions, and the car stopped losing coolant as fast. It is an affordable temporary fix and easy to use. I would recommend it for minor radiator or heater core leaks, especially if you need a quick solution before doing a full repair. Just make sure to use the correct amount and monitor your cooling system afterward.
From Rislone
Works great!
Would Recommend[This review was collected as part of a promotion.] This solved my problem and gave extra life to my radiator!
From Rislone
Easy to use
Would Recommend[This review was collected as part of a promotion.] Sealed up my aluminum radiator quick. Hasn't leaked and it was a 3 core aftermarket rad
From Rislone
Fixed the problem
Would Recommend[This review was collected as part of a promotion.] I bought this product a few weeks ago. I followed the instructions on the bottle. I have not seen any coolant on the ground since I put it in the radiator.
From Rislone
Actually stops the leak
Would Recommend[This review was collected as part of a promotion.] Worked far better than expected; had been chasing a leak for weeks and short of tearing the whole thing apart or replacing this; tried this as a last ditch effort and it worked! Love it.
From Rislone
Great product
Would RecommendBought this after trying a couple of other products that didn't work but this got the job done.
From Rislone
Fixed my leak
Would Recommend[This review was collected as part of a promotion.] Had a radiator leak and it sealed it no leaks since.
From Rislone
Stuff never fails!
Would Recommend[This review was collected as part of a promotion.] Was pouring out smoke pulled into the gas station was recommended this product, next thing I know no more smoke. I recommend to anyone and everyone!! Would definitely like to try some of the other products
From Rislone
Best one
Would Recommend[This review was collected as part of a promotion.] I always recommend this brand. Ive used in the past multiple times and always had good results.
From Rislone
A savior
Would RecommendThis stuff saved me this is the best stuff I have ever used
From Rislone