Why aren’t the old fashioned ear muff style motor flushers adequate for flushing my engine?
The ear muff motor flushers are twenty year old technology and they have critical shortcomings. Marine engines utilize high volume water pumps, mostly with neoprene rubber impellers. Any interruption in the water flow while the engine is running will severely damage the impeller. With the ear muff device, you are simply not getting the volume of water into the water pump and in many instances it will cause the garden hose to collapse. Overheating is extremely detrimental to engine life and in severe instances may result in immediate damage. In fact, some marine engine repair manuals contain the following statement: “DO NOT EXCEED 1500 RPM AS HOSE MAY COLLAPSE AND CAUSE ENGINE OVERHEATING” At 1500 RPM the engine water pump can only create approximately five pounds of pressure in the cooling system. This is not nearly enough volume of water to flush the engine properly. It has little or no effect on the salt corrosion buildup inside the engine block. Conversely the SuperFlush System back
