Radiator Stop Leak 2X Concentrate
See What Our Customers Are Saying View More Testimonials
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. - G. & S. H. - Tulsa, OK
- Can Bar’s Leaks® Radiator Stop Leak be installed in existing antifreeze coolant?
Yes, Bar’s Leaks works with all types and colors of antifreeze coolant and/or water.
- Will it work in the new extended life antifreeze?
Yes, Bar’s Leaks Radiator Stop Leak works with all types and colors of antifreeze coolant and/or water.
- Do I need to drain my cooling system after using Bar’s Leaks?
No, this product is designed to be left in the cooling system to protect from future leaks and overheating.
- How long does it take to see results?
We recommend you drive/idle the vehicle for 15 to 30 minutes. In most cases the leak will be sealed instantly, but others will require up to 30 minutes. If the leak is not sealed in 30 minutes, a second application may be required or mechanical repair may be needed.
- Will Bar’s Leaks plug my heater core?
No, Bar’s Leaks® Radiator Stop Leak will not clog a clean heater core. Note: If using Bar’s Leaks® to stop heater core leaks, make sure you turn your heater control to HOT. Some vehicles have a valve that controls coolant flow through the core and is only opened in the HOT position.
- What are the dosage recommendations?
Use one bottle for regular size cooling systems; this covers most 4, 6, and 8 cylinder engines. One bottle treats up to 3 gallons For larger systems use one bottle for every 2 gallons of coolant capacity
- Can I install Bar’s Leaks in my overflow reservoir?
Yes, if direct access to the radiator cap is not available, install in overflow tank.
- I accidently added Bar’s Leaks into my gas tank, what should I do?
Bar’s Leaks is only designed to be added to the cooling system. If the product is accidently installed in the gas tank, the tank should be removed and cleaned out by a professional mechanic.
- The bottle froze before I was able to use it, what can I do?
If the bottle did not break from freezing, just let the product thaw out, shake well, and use as normal.
When you need to fix a radiator leak, you don’t want to spend the time it will take to visit a mechanic. 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.
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 like you: 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.
Simply watch Bobby and Caitlin in our how-to video, and they will show you how easy it is to install this product.
Solutions for a Range of Automotive Issues
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.
“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.”
“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.”
“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.”
“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.”
“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!”
“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.”
“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'tt 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!!!!”