Formula 4T 20W40 4-Stroke Oil we bring forward is composed of graded basic chemical compounds with approved formulas to ensure its ability to resist thermal breakdown and viscosity at high temperature and severe working conditions. Also, it is helpful for reducing exhaust emission. This is strongly recommended to meet absolute lubrication requirements of motorcycles, scooters and many other 4-stroke engines. Moreover, Formula 4T 20W40 4-Stroke Oil provides excellent acceleration to the engine and minimizes the friction of internal engine.