SKU: 58117481833

RISLONE Liquid Aluminum Cooling System Radiator & Heater Core Stop Leak 41186

Sale price$26.95 Regular price$29.95
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Description

RISLONE Liquid Aluminum Cooling System Radiator & Heater Core Stop Leak 41186Rislone Liquid Aluminum Cooling System Radiator & Heater Core Stop Leak is the best radiator stop leak money can buy. Scientifically formulated to permanently seal coolant leaks that are the cause of most overheating problems. Liquid Aluminum is part of the next generation stop leak line which not only seal leaks, but also conditions the system. Contains Xtreme Cool which stops overheating and reduces water temperature. It is guaranteed to safely and

Rislone Liquid Aluminum Cooling System Radiator & Heater Core Stop Leak is the best radiator stop leak money can buy. Scientifically formulated to permanently seal coolant leaks that are the cause of most overheating problems. Liquid Aluminum is part of the next generation stop leak line which not only seal leaks, but also conditions the system. Contains Xtreme Cool™ which stops overheating and reduces water temperature. It is guaranteed to safely and easily seal leaks in plastic, aluminum and metal (copper/steel) radiators, heater cores, gaskets and freeze plugs. It will not harm the cooling system, no draining is required. Use with ALL types of traditional or extended life coolant including yellow, orange, pink, red, blue, purple and green silicate based & non-silicate based (OAT/HOAT) 50-50 mix antifreeze, and/or water. For most vehicles leaks seal instantly.

  • Stops Coolant Leaks
  • Seals Heater Core Leaks
  • Seals Gaskets
  • Seals Freeze Plugs

Dosage & Directions

Dosage
Use ½ bottle in a small cooling system, such as 4 cylinders engines.

Use 1 bottle for regular size systems such as most 4, 6, 8 and 10 cylinder engines.

For larger systems, use 1 bottle for every 12L of cooling system capacity.

Directions
Use with all types of antifreeze including conventional green or blue (silicate-based) and extended life red/orange or yellow (OAT/HOAT) antifreeze. For most vehicles leaks stop instantly.

For severe leaks, like a blown head gasket, it is recommended to use Rislone Head Gasket Fix.

  1. Allow engine to cool. Make sure engine is cool enough so radiator cap can be safely removed.
  2. Shake well. Pour Liquid Aluminum™ directly into radiator. If using in a small cooling system, such as 4 cylinders with no air conditioning, install ½ of bottle.
    TIP: If direct access to radiator is not available, install in overflow tank.
  3. Fill radiator and overflow tank to proper level and reinstall radiator cap
  4. Turn Heater on hot and fan on high
  5. Drive/idle engine for 10 to 20 minutes
  6. Leave Rislone Liquid Aluminum™ in the cooling system for continued protection

Disposal
Observe local laws and regulations. Where permitted, dispose of in sanitary sewer systems. Never pour onto the ground or storm sewer system.

Cooling systems that are dirty or partially clogged should be flushed before usage. Protect from freezing.

Compatibility

Stop Leak

Xtreme Cool

Liquid Aluminium™ safely seals leaks in plastic, aluminum and metal radiators, heater cores, gaskets and welch plugs.

One of the few products to meet ASTM D6107 requirements for Stop Leak Additives used in Engine Coolants.

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

 

    Frequently Asked Questions

    Can Rislone® 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 regular and extended life coolant including yellow, orange, pink, red, blue, purple and green silicate based & non-silicate based (OAT/HOAT) antifreeze.

    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, Rislone® 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 Rislone® 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?
    Add one bottle for 5, 6, 8 and 10 cylinder engines. Use 1/2 bottle in 3 and 4 cylinder engines. One bottle treats cooling systems from 9.5 liters to 15 liters. Use 1/2 bottle for cooling systems from 5.5 liters to 9.4 liters. For larger systems use one bottle for every 12 liters of cooling system capacity. Small engines or other small systems use approximately 40 mL per liter of fluid 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 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.

    Technical Information

    SAFETY DATA SHEET
    CODE: 41186
    SIZE: 500ML

      Shipping Notes
      • Free Standard Shipping on $100+ Orders to the USA.
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      Exchange/Return Notes
      • We offer a 30-day return/exchange service after receiving.
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      SKU: 58117481833

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      4.7 ★★★★★
      Based on 25 reviews
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      B C
      Bozeman, US
      ★★★★★ 5
      Great quality!
      Color: Teal, Size: 72"W x 72"L (Pack of 1)
      This is a really nice shower curtain for the price. The color is beautiful. Looks great in my kid's bathroom.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on June 1, 2026
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      808saka
      Battle Creek, US
      ★★★★★ 4
      Durable and Nice Color, But No Magnets
      Color: Brown, Size: 72"W x 72"L (Pack of 1)
      This shower curtain looks really nice and has held up well so far. The color is a rich chocolate brown, just like the picture, and it looks great in the bathroom. The color is accurate to the picture used in the listing. Installation was very easy, and the holes for the curtain rings are reinforced, which makes it feel durable and well made. I like that it seems sturdy and not flimsy. One thing to note is that the Amazon listing suggested magnets for durability, but this curtain does not have magnets. Since I use it as an outer decorative curtain with a plastic inner liner, that hasn’t really been an issue and mold hasn’t been a problem either. I would definitely recommend using a plastic liner with it. Overall, it looks nice, installs easily, and seems durable.
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      Reviewed in the United States on March 5, 2026
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      Roy D. Salley
      West Palm Beach, US
      ★★★★★ 5
      Good quality, hangs well and is really a pretty curtain.
      Color: Fog Blue, Size: 72"W x 72"L (Pack of 1)
      This shower curtain is really pretty. Nice quality fabric and looks so much better than cheap plastic curtains. Highly recommend this shower curtain. Sets off the bathroom far better than I expected.
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      Reviewed in the United States on June 2, 2026
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      CC & Charlie
      Charlottesville, US
      ★★★★★ 5
      Nice curtain for the price
      Color: White, Size: 72"W x 72"L (Pack of 1), Color: White, Size: 72"W x 72"L (Pack of 1)
      Very nice curtain. Feels durable and I love the waffle texture look. I bought it to replace the kiddish one I had in there for staging purposes. Fits great, no odor when opened the packaging. Easy to hang and good value for money.
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      Reviewed in the United States on May 3, 2026
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      Ara
      Birmingham, US
      ★★★★★ 5
      holds up, cleans well, looks good. what else do you want
      Color: White, Size: 72"W x 84"L (Pack of 1)
      I almost never write reviews, but for a random brand amazon product, this is high quality. I have a very tall shower so was struggling to find anything locally and ended up buying this. It looks nice, feels thick and sturdy but isn't super heavy so I don't have to worry about it pulling the tension rod down. It's opaque enough to not see through but lets enough light in. All that is kinda whatever, it's the functionality I was looking for but nothing to write home about. The thing is, my plastic inner curtain liner is way too short, maybe by like 6 inches. After a year of use, this left an area exposed to water, shower products etc. and it got pretty grimey. I was thinking I'd need to replace it but decided to try and bleach the bejeezus out of it and then let it sit in hot soapy dr bronners water. Now it's basically good as new. Idk if you could throw it in a washer, I personally wouldn't but this worked great. I respect a cheap product that does it's job, looks good, and cleans easily. You do need an inner liner though unless you're ready to bleach it frequently. Or you don't care about stains at all, that's your prerogative.
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      Reviewed in the United States on October 13, 2025

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