This is the coolest video will see all day! We’ve seen clear engine heads before but never like this. He uses a 4k slow motion camera to capture it in an entirely new way! The slow motion shows you exactly what is going on with each engine stroke. You can clearly see the intake and exhaust valve open up as it the piston goes up and down pulling in the air-fuel mixture and pumping the exhaust out. He also puts 3 types of gas into it and the difference in how they act is so interesting!