Bar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz

Bar’s Leaks® Liquid Aluminum 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.

• Repairs gasket leaks
• Bar's Leaks Liquid Aluminum Stop Leak seals radiator leaks; Seals freeze plug leaks; Repairs gasket leaks and heater core leaks; Lowers water temperature
• Seals freeze plug leaks
• Seals radiator leaks

Frequently Asked Questions

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.

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.

What's in it?