Liquid Aluminum (1186)

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Liquid Aluminum (1186)

Bar's Leaks Liquid Aluminum is part of our next-generation stop leak lineup that not only seals leaks, but also conditions the system. With this formula, you’re getting a solution to your immediate problem plus a preventive tool for avoiding future issues with heater core leaks and coolant leaks. This product also contains Xtreme Cool™, which stops overheating and significantly decreases water temperature. The combination of these two elements are guaranteed to safely and easily seal leaks in plastic, aluminum and metal radiators, heater cores, gaskets and freeze plugs. Contact Us About This Product Find This Product Near You

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  • Can Bar’s Leaks® Liquid Aluminum™be installed in existing antifreeze coolant?

    Yes, Liquid Aluminum™ is specifically designed to be directly added to the cooling system without having to flush out the antifreeze. It also can be used in water alone. But if using in water, it is recommended that another bottle of Liquid Aluminum™ be added to the system once antifreeze is installed.

  • Will it work in the new extended life antifreeze?

    Yes, Liquid Aluminum™ works with all types of coolant including yellow, orange, pink, red, blue and green silicate based and non-silicate based OAT/HOAT antifreeze and/or water.

  • Do I need to drain my cooling system after using Liquid Aluminum™?

    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 10 to 20 minutes. In most cases the leak will be sealed instantly, but others will require up to 20 minutes. If the leak is not sealed in 20 minutes, a second application may be required or mechanical repair may be needed.

  • Will Liquid Aluminum™ plug my heater core?

    No, Bar’s Leaks® Liquid Aluminum™ Cooling System / Radiator Stop Leak product is part of the next generation stop leak line which is certified to be used in all cooling system types. It is guaranteed to safely and easily seal leaks in plastic, aluminum and metal (copper / steel) radiators, heater cores, gaskets and freeze plugs. 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 1 (one) bottle for regular size cooling systems, this covers most 4, 6, 8 and 10 cylinder engines. Use 1⁄2 bottle for four cylinder engines. For larger systems, use 1 (one) bottle for every 3 gallons of cooling system capacity.

  • How does Xtreme Cool™ make the vehicle run cooler?

    The Xtreme Cool™ additive in Liquid Aluminum™ reduces the surface tension of coolant increasing the wetting ability. This improves heat transfer reducing coolant temperature helping to prevent overheating and leaks.

  • Can I install Liquid Aluminum™ in my overflow reservoir?

    Yes, if direct access to the radiator cap is not available, install in overflow / reservoir tank.

  • Will this work in both domestic and import cars and trucks?

    Yes, Liquid Aluminum™ will work in all types of water cooled vehicles.

  • 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.

  • I accidently added the Liquid Aluminum™ into my gas tank, what should I do?

    Liquid Aluminum™ 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.

  • I accidently added the Liquid Aluminum™ into my engine oil, what should I do?

    If the product is accidently installed in the engine oil and the engine has not been started, in many cases you can remove the valve cover where installed and drain the oil leaving the drain plug off. Then use an engine flush washing out the head giving special attention to the oil return holes that run down to the oil pan. Clean these out and pour the engine flush down these holes flushing everything into the oil pan and out the drain hole. If the engine has been run, the vehicle needs to be towed to a professional mechanic for evaluation. This might include taking the engine apart to clean all of the internal parts.

Some of the best recipes only require two key ingredients to make them the favorite dish at the dinner table. We might not have professional chefs at our company, but we do have a powerful team of product engineers who constantly experiment to give you the best stop leak products in the industry. And that’s exactly what happened with our Bar’s Leaks Liquid Aluminum Cooling System Radiator and Heater Core Stop Leak.

The two key ingredients in this product are Liquid Aluminum™ and Xtreme Cool™. Liquid Aluminum™ is part of the next-generation stop leak line that not only seals leaks, but also conditions the system. When you choose Bar’s Leaks to stop coolant leaks, you’re getting a solution to your immediate problem plus a tool for avoiding future issues with heater core leaks and coolant leaks. It also contains Xtreme Cool™, which stops overheating and reduces water temperature. The mixture of these two technologies are guaranteed to safely and easily seal leaks in plastic, aluminum and metal radiators, heater cores, gaskets and freeze plugs.

Go to a mechanic for these same services and you’ll discover just how much Bar’s Leaks delivers in the way of value. A professional mechanic will charge significantly more for heater core leak repair and mitigation of coolant leaks. You’ll also have the inconvenience of finding time to take your car to the shop, get an estimate and wait for the mechanic to repair your coolant leak. It’s an inconvenience you can do without when you discover the power of Bar’s Leaks and our coolant leak repair products.

Many who use our heater core leak products are amazed by the benefits. That means that the next time you notice your radiator is leaking, all you have to do is grab one of these bottles, open the hood of your car and follow our how-to video for the quick and easy installation process. It’s time to get your show back on the road. And Bar’s Leaks can get you there by quickly, effectively and inexpensively helping you stop coolant leaks.

Products That Fit Your Lifestyle and Budget

You use a car for convenience and transportation. Professional repairs can be inconvenient and expensive, which is why Bar’s Leaks has spent nearly 70 years developing products that fit squarely into your lifestyle and budget. Our team of award winning chemical engineers has spent decades perfecting products that stop coolant leaks, stop heater core leaks, and address a range of other automotive problems. These chemical repair solutions are proven to work, and our team is always innovating and searching for new ways to better serve today’s car owners and the latest generation of automobiles. All our products are made right here in the U.S.A., just an hour outside of Detroit. Take advantage of Bar’s Leaks products when you need to stop coolant leaks, and discover just how fast, effective and inexpensive the solutions can be.

Find out where you can get Bar’s Leaks to stop your cooling system leak today.

Leave a Review

  • “I decided to write to commend you for an outstanding product. I have a 2004 Pontiac Grand AM, V6 and with about 100,000 miles. About 6 months ago I had the Pontiac dealer flush the cooling system. I later noticed my car was slowly loosing coolant fluid with no evidence of a leak. At about the same time, my car developed an engine problem where it would misfire, rough idle when cold, and the “Check Engine” light would come on if I drove away too soon after starting the car. Unaware these problems were related, I had the Pontiac dealer replace the spark plugs and clean the fuel injectors per his recommendation. The problems did not go away even though I paid hundreds of dollars. To take care of the slow coolant leak, I decided to try Bar'’s Leaks Liquid Aluminum. To my surprise, the engine problem my car had went away the very next day, and my car is no longer loosing coolant fluid! I am totally amazed and thankful for your product! It’s been two months now with my car running perfectly. After some research, it appears to me that my car’s engine had some kind of a head gasket leak that got repaired by your amazing product.”

    S. K. - Santa Barbara
  • “I bought a bottle of Bar's Leaks Liquid Aluminum Radiator Seal at a local Napa store because I had a leaky water pump seal. The leak was so bad that I could only drive about ten miles before my coolant was gone and my engine would over heat. I am out of work so I really couldn't afford to get a new water pump installed. I had a 200 mile trip to make on the week end and a job interview Monday morning thinking my car was toast and I would miss everything. I bought the bars leaks liquid aluminum on the friday before, just after my car overheated so bad that I thought the head gasket would blow, and added it in the parking lot of Napa. Within minutes there were no leaks from the water pump or anywhere else. Saturday I made my 200 mile trip and stopped by on the way home at the Napa store to tell the sales person who showed me your product how great it worked. I've never been so impressed by a product that really does what it says it will do and I'm writing this to thank you for a product that really works.”

    M. K. - Mt. Hood, OR
  • “I drive about 40,000 miles a year selling carpet for Empire. The company is great, but times are still a little tough out there. I have a 2000 Ford Tauras with 234,000 miles on it. (Bought used a few years ago.) I need my car to work and survive. A couple days ago I started getting a big blast of steam from the radiator when I stopped. I cannot afford another repair. Put your Liquid Aluiminum in today with great trepidation. Drove for 25 minutes and stopped. No steam. God bless you. Your product is awesome. I did not sleep at all last night. Now I am relaxed because of you. Thanks!!!”

    B. B. - Pittsburgh, PA
  • “On our way from Phoenix, AZ in April of this year my 1987 Southwind motor home overheated and after having it checked by a mechanic was told the thermostat probably froze shut causing the engine to overheat. Also, he said the radiator and intake manifold were leaking. I asked if he could just add a sealer to the radiator to get me home since it would take a few days to fix the radiator and intake manifold. He said they had a very good commercial sealer he used before with some success. I decided to give it a try.

    The next day when we left we didn’t make it to Albuquerque, NM before it overheated again. I filled the radiator with water and drove to Albuquerque looking for an auto parts store to try another sealer. I stopped at an O'’Reilly store and asked the sales person there if he had any success with the radiator sealers and he recommended your product. I put the sealer in and took off the next morning and drove all day without a problem. In fact we drove 2 more days until we got home without a problem. I was really impressed with your product and would recommend it to anyone who has a leaky radiator. I believe it was far superior to the commercial product we started with. Thanks again for your product.”

    Darren S. -
  • “I had a front cover coolant leak on 20 yr old Ford van. It was in a spot so difficult it took me an hour taking stuff off to get a look at it. 1 can of heavy duty slowed it down quite a bit but didn’t stop it. I figured I had a huge repair on my hands and in desperation added I an additional can of Liquid Aluminum. The leak stopped during the first heat up cycle and has held for a week now. Your product has allowed me to keep my truck on the road as I would not be able to work on it for a few months till the weather got warm. Excellent product, I will recommend it to all.”

    R. P. - Newton
  • “Your product rocks!!!!! It works perfectly on my 1999 Corvette!! I used your product, Liquid Aluminum first before hours of labor trying to find the small slow leak. My leak is GONE!! No more drip on the garage floor. Just wanted to let you know how satisfied I am with your product. Thanks!”

    M. J. - Temple Hills
  • “I used your product, Bar’'s Leaks Liquid Aluminum, and was extremely satisfied with it. It not only saved me money, it was easy to use! GREAT PRODUCT!”

    B. W. -
  • “Bar’'s Leaks Liquid Aluminum Radiator Stop Leak sealed my head gasket leak with in minutes. I'’m so satisfied with this product I tell everyone I know. It would have cost me $300 to fix my car myself. With this product, it cost me less than five dollars. So keep up the good job on making this product and other types of products.”

    Name Not Provided - New Jersey
  • “Just two days ago I noticed my 99 corvette was running a little hot, so I checked my radiator and it was all most empty, so I started to see where the leak was coming from, and found out it was my heater core. Because when I turn the motor off the front windshield with steam up and I could smell antifreeze, so I looked online to fix it myself, but you have to take the whole dash off to get to the heater core and that was not for me, so my next choice was to bypass it. But I needed my heat for my windshield in the morning to defrost them and besides that it's cold this time of the year, so my third option was Bar's Leaks. Picked up a bottle from Walmart and put it in the radiator in the parking lot while I was there, by the time I drove home 15 minutes the leak was fixed, and that will buy me some time until I get it fixed..unbelievable product.”

    Baddest 1 - Katy, TX
  • “I have a 2006 BMW X5 with 115,000 miles that developed a leak somewhere in the cooling system; I never located the actual point of the leak, but it was somewhere behind the radiator and on the passenger side of the vehicle. Maybe it was a seal in the water pump or a gasket someplace else - I have no clue - but was a pretty significant leak. Rather then take it to a shop, I decided to try Bar's first. Following the instructions and with the heat on "high", within 15-20 minutes the leak completely stopped just as advertised. I highly recommend Bar's and I suggest using it when you develop a cooling system leak BEFORE you do anything else. Awesome product!”

    Tommy F. - Colorado Springs, CO