All internal combustion engines produce crankcase gas as a result of the explosion in the combustion chamber pushing a portion of the fuel air mixture past the piston rings into the crankcase. Consequently, engines have a mandated process known as Positive Crankcase Ventilation, in which the crankcase gases are carried out of the crankcase by a hose containing a PCV valve, and are routed to the intake of the combustion chamber to be burned. In addition to containing combustible unburned fuel vapor, which is basically fuel that was pushed past the pistons and into the crankcase, the crankcase gases also contain numerous non-combustible vapors such as contaminated/burnt oil, water, and soot, which when introduced into the combustion chamber interfere with the burning/combustion process of the air and fuel mixture and cause the combustion to be less effective and efficient. As the non-combustible vapors are only partially burned, some of them become soot and are expelled through the exhaust system and some become carbon, which is deposited on the pistons, valves, and spark plugs resulting in even more inefficiency in the engine as time passes and more exhaust emissions. For independent information on PVC and its process, visit Wikipedia's PCV Valve explanation .

The Fuel and Air Saver™ system is a revolutionary system that installs between the Positive Crankcase Ventilation (PCV) valve and the intake to the combustion chamber. As the crankcase gases enter the Fuel and Air Saver™, the patented separation process which incorporates nine laws of physics, separates the harmful and non-combustible vapors such as contaminated oil, water, and soot from the unburned fuel vapors, whereby the oil, water, and sooty vapors condensate into a liquid and settle to the bottom of the container where they remain… resulting in only the lighter unburned fuel vapor being routed into the intake of the combustion chamber to be burned. The liquid that settles in the container is disposed of with the crankcase oil during routine oil changes. This process of preventing the contaminated oil, water, and sooty vapors from entering the combustion chamber and allowing only the unburned fuel vapors into the combustion chamber during the Positive Crankcase Ventilation process, produces numerous benefits… significant increased fuel economy being a major and primary benefit!