Motul 5100 10W/50 oil is a Semi-synthetic that uses Ester as the base lubricant. It was designed for 4 stroke engines which share engine and gearbox oil. There are special additives that reduce the shear effect on the gears, help cool clutch, reduces noise and wear. On most modern 4 strokes engines under race condition it is good for about 500km or 12-15 hours. Specification API SG,SH,SJ,SL CCMC G4 & JASO T903 MA