This is why lubrication is important for our 2 stroke Yamaha Blasters, and really any 2 stroke machine:
Two cycle engines have no lubricant distribution system. In pre mix 2 cycle engines oils are mixed into the fuels, and in 2 cycle injector systems, oils are added to the fuel and air at a rate appropriate to conditions. In both cases, the oil is simply mixed with the fuel to lubricate the engine.
The reasons two cycle engines (and 2-cycle oils) work so hard is simple. Every stroke is a power stroke. In a four stroke engines, the piston rises and is driven down by combustion, but the next time the piston rises it pushes out exhaust gases. In a 2 cycle engine, exhaust gases are driven out by the incoming oil fuel mixture as the piston pushes the mixture into the combustion chamber on each and every stroke. These factors place tremendous demands on oils and lubricants. Read the article >
Source: http://www.go-synthetic.com/2-cycle/2-cycle.htm
Company: AMSOIL
Two cycle engines have no lubricant distribution system. In pre mix 2 cycle engines oils are mixed into the fuels, and in 2 cycle injector systems, oils are added to the fuel and air at a rate appropriate to conditions. In both cases, the oil is simply mixed with the fuel to lubricate the engine.
The reasons two cycle engines (and 2-cycle oils) work so hard is simple. Every stroke is a power stroke. In a four stroke engines, the piston rises and is driven down by combustion, but the next time the piston rises it pushes out exhaust gases. In a 2 cycle engine, exhaust gases are driven out by the incoming oil fuel mixture as the piston pushes the mixture into the combustion chamber on each and every stroke. These factors place tremendous demands on oils and lubricants. Read the article >
Source: http://www.go-synthetic.com/2-cycle/2-cycle.htm
Company: AMSOIL
