Abstract: A five-stroke internal combustion engine that improves fuel efficiency, power output, and decreases emissions. The five strokes are an intake stroke, a recycle stroke, a compression stroke, a power stroke, and the exhaust stroke. The five-stroke internal combustion engine provides for recycling some of the fuel-air mixture during the recycle stroke and provides a greater power stroke to compression stroke ratio. A condensed fuel-air separator for the fuel-air mixture and a recycle valve for that condensed fuel-air separator are part of the design. The instant invention may be utilized for gasoline, diesel and natural gas type engines.