Radiator Stop Leak 2X Concentrate (1194)

Radiator Stop Leak 2X Concentrate


  10 Reviews

Stops and seals antifreeze/coolant leaks. Bar’s Leaks Radiator Stop Leak 2X Concentrate Sealer is specially designed to stop minor to moderate cooling system leaks and drips caused by normal cooling system wear and age. It works with ALL types and colors of antifreeze coolant and/or water. Which is one of our commitments to customers: no matter what product you choose, our radiator stop leak or something else entirely, you can also count on effectiveness and ease-of-use. There’s no special automotive expertise needed to fix a radiator leak with Bar’s Leaks.


NOTE: Cooling systems that are dirty or partially clogged should be flushed before usage.

Shake well. Pour Stop Leak into a cool radiator. If direct access to radiator is not available, install in overflow/reservoir tank. Fill radiator and overflow tank to proper level and reinstall cap. Drive/idle engine for 15 to 30 minutes. If leak continues, a second application may be required, or mechanical attention is needed. After successful installation, Leave Bar’s Leaks in the cooling system for continued protection.

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When you need to fix a radiator leak, you don’t want to spend the time or deal with the hassle involved in scheduling a trip to the mechanic or dealership. And then there’s the cost of getting a radiator stop leak solution. But getting the fix radiator leak solution you need shouldn’t be time consuming and it shouldn’t be expensive. That’s why, at Bar’s Leaks, we’ve developed our line of radiator top leak products, including our 2X Concentrate.

Simply watch Bobby and Caitlin in our how-to video, and they will show you how easy it is to install this product.


At Bar’s Leaks, our specialty is offering a variety of products that provide fast, effective, affordable chemical repair solutions. In addition to our radiator stop leak products, we also offer leak-stopping products related to cooling systems, head gaskets, engine oil, power steering, transmissions and even hydraulic fluid. If you know how to pop the hood of your, you’ll be able to use products from Bar’s Leaks — it’s that easy.

We have a team of top-grade chemical engineers who are always working to enhance our existing products and to develop new products in response to the latest in auto manufacturer innovations and technologies. Know that we pour careful research and attention to detail into each chemical repair solutions in order to ensure that it meets the highest standards of effectiveness.

You’ll no doubt find plenty of alternative products that fix radiator leaks, but many of these products don’t work as effectively as advertised, and some can even make your situation worse. For nearly 70 years, Bar’s Leaks has been the number one national chemical repair solution provider that everyday drivers can trust for effective solutions.

Made in the U.S.A, just an hour outside of Detroit, Bar’s Leaks products are the most trusted in the industry. We’ve served tens of millions of customers through our many decades of service, and we’ve been able to continue serving drivers just like you because of the speed, effectiveness and affordability that comes with our radiator stop leak and other products.

Fix your radiator leak with Bar’s Leaks today.

Customer Reviews

  10 Reviews
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 10 reviews
 by Joseph L.
You guys saved my butt

You guys saved my butt last winter. My 2009 Impreza got a radiator leak 4 hours from home with both my daughters in the car late at night in the dead of Pennsylvania’s winter. I bought your Radiator Stop Leak 2X Concentrate and Bar's got me back on the road and home safe. Thank you for saving us!

 by dan fahl

I have used Bar's Leaks for several years now not only because it works better than the others but also because of its reputation for working without purchasing multiple bottles to get the job done.

 by G. & S. H. - Tulsa, OK

While traveling to Oshkosh for the airshow, we had a blowout on one of the front tires on our motorhome. We then discovered a radiator leak. Being 800 miles from home, we were desperate to have this fixed and avoid more disaster. We decided to try Bar's Leaks 2X Concentrate. IT WORKED! Our motorhome didn't leak for the entire week and we drove back to Tulsa over 800 uneventful miles! Thanks for a great product.

 by R. Druckemiller - Lewistown

Wow... Awesome, I drive a 1987 Ford Ranger that developed a leak in the radiator, I have tried other stuff in the past with other trucks, but nothing worked. Now I stopped and got a bottle of the Bar's Leaks 2X liquid stop leak concentrate, now at this time I'’m running already, I had to get my son off the bus, so I put the bottle in and left my truck run as I ran in the house, took me about 10 min. I came back out to get him off the bus, and I noticed the leak already had stopped, holy cow… That was quick...I’'m now a customer for life...Thank you again for making a great product.

 by B. B. - Southaven, MI

I just want to thank you for a product that works as advertised. I had a small leak in my radiator and decided to try your product. I honestly did not think it would work, but hey, it's cheaper than a radiator repair. I followed the instructions exactly, and Bar's Leaks worked exactly as promised. You have a customer for life. Thank you.

 by G. & S. H. - Tulsa, OK

While traveling to Oshkosh for the airshow, we had a blowout on one of the front tires on our motorhome. We then discovered a radiator leak. Being 800 miles from home, we were desperate to have this fixed and avoid more disaster. We decided to try Bar's Leak. IT WORKED! Our motorhome didn't leak for the entire week and we drove back to Tulsa over 800 uneventful miles! Thanks for a great product.

 by R. H. - Friendswood, TX

You can add another testimonial. I own a 96 Ford Bronco, 5.8, with about 180,000 miles. The water pump was replaced just about a year ago. Last Thursday a new leak developed and at first glance I thought "oh no, not another water pump!" Closer inspection revealed that the water pump was fine. However the timing chain cover gasket was the source of the leak, which still meant pulling the water pump, etc… I picked up a bottle of Stop Leak at the auto parts store, poured it in, let her idle, and crawled under to observe the results. The leak was at a point where I could easily see the coolant/water flowing out. I had checked my watch before I crawled under the truck. Bottom line; I laid on my back and watched as the Stop Leak do its job. In about 3 minutes I saw the leak slow down. In another 3 minutes it stopped, right before my eyes! This saved my weekend and about $200 in parts. Great stuff!

 by B. G. - Walker, IL

My wife's '97-98, 500 mileage Taurus had a cooling system leak and we were told by local garage it needed a new radiator...I asked the mechanic if Bar's Leak might solve the problem and he said probably not...The repair bill was estimated at $500+ ...I told him not to do the repair.... I put a bottle of your product in cooling system at home. It was still leaking that night....But after a few more times driving the car it seems to have sealed the leak....My local mechanic is a straight up shop owner but I'm glad I tried your product...Will continue to monitor the car but looks like problem is resolved.

 by M. S.

Outstanding! It did work!!!! I drove to Canada yesterday from home in the USA!!! And I arrived yesterday!!!! Six hours without a drop of antifreeze on the floor! You guys are intelligent!!! the antifreeze! Didn't’t leak not even once!!!!! I LOVE BAR'S LEAKS! PUT ON YOUR TESTIMONIALS!!!!!! You could even leave my email! I will stand behind your item forever!!!! BAR'S LEAKS IS OUTSTANDING! U GUYS MADE AN OUTSTANDING PRODUCT!!!!

 by Sparky - Eastern Pennsylvania

Me and friend were heading home from a long day of rock crawling in an '87 K5 Blazer. His water pump decided to leak when at the end off the trail ride and towing the vehicle wasn't an option at the time. We were desperate and did have extra coolant. No auto parts store was open, however a nearby gas station sold this exact product. A water pump leaking at about a gallon per 10 minutes was sealed and remained sealed for an hour ride home. IT WORKS!!!

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