

🛡️ Seal leaks, stop overheating, and drive worry-free!
Bar's Leaks 1186 Liquid Aluminum Stop Leak is a scientifically engineered 16.9 oz liquid formula that permanently seals coolant leaks in plastic, aluminum, and metal radiators and heater cores. Featuring Xtreme Cool™ technology, it reduces water temperature to prevent overheating while conditioning the cooling system. Compatible with all coolant types, it requires no draining and is trusted by thousands for reliable, instant leak repair.




| ASIN | B002696FA2 |
| Best Sellers Rank | #11,658 in Automotive ( See Top 100 in Automotive ) #60 in Automotive Fillers, Adhesives & Sealants |
| Brand Name | Bar's Leaks |
| Container Type | Bottle |
| Customer Reviews | 4.3 4.3 out of 5 stars (3,530) |
| Global Trade Identification Number | 00046087011867 |
| Included Components | 1 Bottle Rislone 4405 Engine Oil Supplement, 11oz |
| Item Form | Liquid |
| Item Type Name | Liquid Aluminum Radiator and Heater Core Stop Leak |
| Item Weight | 363 g |
| Liquid Volume | 16.9 Fluid Ounces |
| Manufacturer | Bar's Leaks |
| Material | Plastic |
| Recommended Uses For Product | Automotive |
| Specific Uses For Product | Prevent Corrosion |
| UPC | 046087011867 |
| Unit Count | 1 Count |
Z**R
Must Try.
Looks like it worked. No more leaks.
A**R
Stopped leak
Stopped leak in the engine block. Good product. Bought 2nd time and used in lexus as a preventive measure for any future leaks or problems.
H**I
Genie in a bottle.
IT WORKS!! stops small leaks in any type of radiator with minimum effort, just follow the directions but don't forget to drain some coolant before adding the product (about 1 litre) then top up later.
B**D
يعمل على اغلاق الشقوق في دورة التبريد لكنه لا يغني عن الاصلاح اذا كنت تريد تأجيل الاصلاح استعمله لكن بالنهاية عليك اصلاح مكان التسريب
R**.
Effective
Good product
S**H
Perfect
Fixed my car leak
M**A
Doesn’t work on leaking hose. No bond oR seal
Doesn’t work
H**I
Ij
100 %100 Ok
S**I
I’d say it worked great, I did something very stupid, I had my van idling on my driveway for about twenty minutes or so and my neighbour saw smoke coming from it and alerted me, most of the fluid leaked out of the radiator and in the process it sprung a couple of leaks, went and checked on line with my very good friend the one and only Scotty Kilmer and Barr,s radiator stop leak is what he swore by, no regrets using it, most of the leaks are gone just a minor drip from what I believe is coming from the drain plug, glad I used Barr’s Stop Leak
H**M
جيد
E**R
SI ME FUNCIONO !! LO RECOMIENDO.
D**R
Worked great and great price
E**E
Had a minor leak coming from the bottom of my car radiator. Watched the video from the makers and used half a bottle for a 2009 Nissan Sentra and 3 days later no leak visible and the overflow bottle not drained, fingers crossed. Update: 5 months on and no leak. Highly recommend for minor leaks.
Trustpilot
3 weeks ago
4 days ago