How Bar's Leaks Radiator Stop Leak Works

The Only OEM Stop Leak

Not Like Any Radiator Stop Leak


Bar's Leaks Radiator Stop Leak works differently than any radiator stop leak products in the market.  Simply stated, it stops leaks in the leak and not on top of the leak.  

It is made of millions of tiny particles that travel throughout the cooling system.  Many radiator stop leak products are made of large particles that clog both leaks and cooling systems!  Manufacturers recommend any insoluble particles in the cooling system be no larger than 700 microns.  Bar's Leaks Radiator Stop Leak exceed manufacturer's recommendations at 420 microns.

See the difference yourself with  Bar's Leaks Tin Can Demo and  Bar's Leaks Radiator Stop Leak Demo .  The Tin Can Demo is an easily duplicated to see the difference yourself!

How Bar's Leaks Radiator Stop Leak Works
Stops External Cooling System Leaks

Stops External Cooling System Leaks

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.  Creating a strong seal without clogging your cooling system.

Stops Internal Cooling System Leaks

Stops Internal Cooling System Leaks

You might find milky brown coolant from an internal oil-coolant leak.  Bar's Leaks Radiator Stop Leak will seal porosity leakage in cast iron and aluminum.

Stops Head Gasket Leaks

Stops Head Gasket Leaks

Bar's Leaks Radiator Stop Leak particles burn when exposed to the heat of the combustion chamber and form a hardened seal in minor head gasket leaks.  For larger head gasket leaks, we recommend Bar's Leaks Head Gasket Repair 1 Step or Head Gasket Repair PRO

Prevents Future Leaks

Prevents Future Leaks

Freely flows within the cooling system, ready to stop both external or internal radiator leaks

Cleans the Cooling System

Cleans the Cooling System

Formulated with aggressive Buffing Agents to combat scale, sludge, and other deposit buildup

Protects from Cavitation

Protects from Cavitation

Cavitation damage is caused by micro implosions formed by low pressure voids from the water pumps impeller.  Bar's Leaks Radiator Stop Leak helps break up the air bubbles before they can cause damage. 

Bar's Leaks Radiator Products

Bar's Leaks provides a simple emergency stop leak to a full "tune up" to maintain and protect every aspect of your cooling system.