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Bar's Leaks Liquid

  • Stops & prevents internal and external leaks up to 0.9 mm in size

  • Freely recirculates to prevents future leaks

  • Will not clog cooling system

  • Protects the cooling system

  • Contains buffing agents to keep system clean

  • Reduces damage associated with cavitation

  • Prevents & reduces formation of rust, scaling and sludge

  • Slows oxidation and corrosion

  • Quiets noisy water pump

  • Compatible with all antifreeze brands


Stops Leaks up to 0.9 mm
Will not Clog the Cooling System
Prevents Future Leaks
Protects the Cooling System

Bar’s Leaks Liquid Radiator Stop Leak is designed for radiators without easy access.  It is formulated as a complete cooling system tune up, used for both emergency stop leak and cooling system maintenance.

Specially designed to seal minor leaks and drips in cooling systems up to 0.9mm in size. Bar’s Leaks Original, Bar's Leaks Liquid, & Bar’s Leaks Original (Truck) reduces or eliminates cavitation, lubricates cooling system components, keeps the cooling system clean, slows or prevents corrosion and quiets noisy water pumps. This product also contains special buffing agents to help keep your cooling system clean.  It works on plastic, aluminum, and metal radiators in heater cores, engine cooling jacket, gaskets (including head gaskets), water pumps, and freeze plugs.

Keep Bar's Leaks Radiator Stop Leak in your emergency repair kit for those unexpected surprises and apply once a year to keep your cooling system working at its best. 

Use Bar's Leaks Nural prior to application to ensure your cooling system is clean.

  • Stops & prevents internal and external leaks up to 0.9 mm in size

  • Freely recirculates to prevents future leaks

  • Will not clog cooling system

  • Protects the cooling system

  • Contains buffing agents to keep system clean

  • Reduces damage associated with cavitation

  • Prevents & reduces formation of rust, scaling and sludge

  • Slows oxidation and corrosion

  • Quiets noisy water pump

  • Compatible with all antifreeze brands

Product Code: EUBL         
Bottle Sizes: Net 150g


Safety Data Sheets (SDS)
Technical Data Sheets (TDS)

How does Bar's Leaks Radiator Stop Leak work?

When reaching an external leak, it travels between the holes, gaps, and cracks and collects around the outer perimeter of the leak.  Then builds inward, effectively sealing the leak. When exposed to air, it expands up to 15% in size, creating a tight seal capable of holding in pressures exceeding the maximum designed for cooling systems.  Resulting in a strong seal without clogging your cooling system.

Bar's Leaks Radiator Stop Leak is best installed directly into the radiator or through the upper radiator hose.  Run/idle the engine for 15 min.

We recommend to drive/idle for 15 to 30 minutes.  If the cooling system leak persists, a second dose may be required or the leak is too large and mechanical repair is needed.

4-6 cylinder engines: use 1 150g can. 
8 cylinder engines: use 2 150g cans. 
> 8 cylinder engines: use 1 150g can for every 12 liters.

The cooling system must be clean and free of other types of stop leak products. If it is necessary to remove other anti-leakage substances, or if the engine is over 2 years old or has traveled over 25,000 miles,, clean the system with Bar's Leaks Nural before using Bar's Leaks Radiator Stop Leak.

 
 

Alternative Products:

Bar's Leaks Nural
Bar's Leaks Original
Bar's Leaks Original Truck