5.0 out of 5 stars It worked on my 2016 Kia Soul

T.G. · June 1, 2025

(function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } So far it works. I bought a used car, did not realize it had a leak.

5.0 out of 5 stars Works like they said it would.

M.M. · April 23, 2025

Works as advertised.

5.0 out of 5 stars Use the whole bottle.

A.w. · March 25, 2025

Put it in the radiator or the reservoir tank. Run engine for 20 or 30 minutes.

4.0 out of 5 stars Easy fix

T.C. · July 2, 2024

Definitely work I’ll recommend it

5.0 out of 5 stars Stopped a coolant leak from the infamous 2006-2009 Honda R18 block crack!

R.W. · May 21, 2023

Had just purchased a used 2006 Honda Civic as a second auto and sure enough the block cracked at the water jacket spewing the whole contents of the coolant overflow reservoir in 10 miles. This manufacturing defect is a known problem so much so that Honda extended the warranty to 10 years. Didn't help me of course as i bought it in 2022. So in goes the Bars System Repair. Why not ? Nothing to lose as a replacement block costs many times over the value of the car even if I found a worthy replacement or whole engine from a junkyard. What do you know? It worked!! My leak has slowed to a very manageable 2 oz. , maybe less a week. Since I check my oil every week, it is a routine check anyway. I have 3,000 additional miles since and the result far exceeds my expectations. The coolant temperature has not changed from it's normal range one bit either. I dare say maybe a little less! As the only fix for a cracked block is replacement, (even welding on aluminum is temporary at best), this product is genius! Congratulations to the chemists at Bars. NOTE: I recommend mixing with distilled water in a gallon jug first as one of the components is very viscous and gets burped out somewhat by air getting displaced from the radiator by it.

1.0 out of 5 stars Clogged my radiator!

A.C. · April 5, 2024

Kept having to add coolant to my reservoir. Thought this might work to stop the leak, but it stopped up the radiator and I had to replace it. Had high hopes for this formula, but I was disappointed.

5.0 out of 5 stars Miracle savior

S.P. · July 5, 2021

Drove 2500 miles now after what appeared to be a weeping waterpump. Was leaking from lower side of pump about 3 quarts came out when I stopped to get gas. Put this in with 2 bottles drinking water and drove 500 miles home. 100 degrees out AC on all the way. Coolant still full. Have driven 2000 more miles since and hasnt leaked a drop. Waterpump seems solid and doesnt wiggle so maybe just dried seals from sitting for months during covid. Will keep an eye on it but this is some miracle stuff. Waterpump and belt and coolant sitting in garage so now just waiting for it to stop working. I may be waiting a long time. We will seeUpdate May 2022. Waterpump finally went out in driveway but let me take 3 x 2000 mile trips with full AC on and 100 degree temps outsideGave me lots of time to buy parts and tools and fix it in my garage when it blew. Excellent product

3.0 out of 5 stars Find your leak!

B.B.L. · November 1, 2017

After reading many reviews I decided to give this a shot since my radiator was leaking for a couple weeks from an unknown location. After purchase I used it in the reservoir and to my surprise the leak continued again for weeks. I also noticed that my radiator was no longer pulling coolant from its resivior. So I decided to take a peak and noticed the gunked up the hose going from the resivior tank to the radiator. And soon after I found the leak coming from a small return hose. So after finding this I flushed the system and replaced the hoses. So in my instance the Bar,s Leaks did not work for my but it might for you. Just be sure where you are leaking from is fixable with this.

Not bad.

g.m. · October 11, 2024

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PRODUCTO INCREIBLE

A.F. · June 12, 2025

Que buen producto, mi auto tenia unas pequeñas fugas ya se le habia cambiado la bomba y goteaba, desde que le puse el producto, a la fecha no he vuelto a llenar los Niveles de refrigerante, un gran producto, lo recomiendo utilizado en un MB C200

Excelente

J. · March 7, 2025

Excelente producto resolvió las micro fugas

Bastante funcional

M.G. · December 28, 2024

Sello bien la fuga, lo llevo usando por más de dos meses y continúa funcionando. Definitivamente lo recomiendo