Lubricants used for motorcycles

4T motorcycles:

Required oil standards: Lubrication of engine, clutch and gearbox

SAE 20W50,15W40, 10W40
JASO MA, MA-2
API SF, SG … SN

4T scooters:

Required oil standards:

Engine lubrication:
SAE 10W40, 5W30
JASO MB
API SJ, SN

Lubricating the final drive:
SAE 80W90, API GL-5

2T motorcycles:

Required oil standards:

Mixed with gasoline engine lubrication:
SAE 20, 30
JASO FB, FC, FD
API TC.

Pour into clutch clutch gearbox, gearbox:
SAE 20W50, 15W40
JASO MA, API SF, SG, … SN