Coolant is absolutely essential to proper internal combustion engine operation. The coolant’s role in engine operation is to carry away and dissipate the heat that is created by the combustion of fuel in the engine. Not only does it carry away heat it also protects the engine from freezing up when the temperature drops below freezing. If only water is used as the cooling medium it can freeze solid; the expansion can destroy an engine. Coolant degrades over time and periodically it must be drained and replaced, during this operation air gets into the system, if it is not eliminated the engine will not operate properly. If there is air I the cooling system the engine can overheat which is one of the primary causes of engine damage.

  • Coolant basics:

In the early days of automobile production the cooling medium was water, this of course presented problems as it either boiled at the approximate operating temperature of the engine or it froze in the winter.

Later, a chemical mixture which is known as “antifreeze” was developed. This glycol mixture can withstand elevated temperatures and will not freeze. Cooling systems were eventually pressurized which increased the boiling point of the mixture.

  • What is the coolant bleeder housing?

Actually, the coolant bleeder housing is quite a simple device. It is usually installed at the high point of the engine towards the rear of the engine assembly. The device is little more than housing with an integral bleed screw. After the mechanic has drained the coolant and replaced it with new it is a simple matter of opening the valve with the engine running, air escapes through the valve orifice and overheating is avoided.

The majority of mechanics and service facilities is aware of this device and uses it as designed when they change the coolant in the vehicle.

The MotoRad coolant housing line is the perfect extension to their category leading, full-line coverage of quality cooling system components.