Two-stroke oil

An example of two-stroke oil bottle with measurement cap. The oil is dyed blue to make it easier to recognize in the gasoline. It appears black in this bottle because it is not diluted.

Two-stroke oil (also referred to as two-cycle oil, 2-cycle oil, 2T oil, or 2-stroke oil) is a special type of motor oil intended for use in crankcase compression two-stroke engines, typical of small gasoline-powered engines.