Depends on the engine, year, and operating environment. The current API CJ4 is backwards compatible with all previous year models. 15W40 tends to be commonly used for "all around" usage with diesel engines. It must be oil formulated for diesel engines, hence the API CJ4 rating.
2 stroke oil
Use 15w40 motor oil unless specified otherwise
a half of quart 2 stroke .....2 stroke oil mixes with the gas only!!! use automatic transmission fluid type f for your gear oil..DO NOT USE 2 STROKE OIL FOR GEAR OIL!!!!
four stroke motorcycle oil .
Use a quality 2 cycle oil only. I recommend you use a synthetic 2 stroke oil.
I use 80 weight gear oil.
10w30 four stroke motorcycle oil. do not use car or truck oil!
Generally it is a 10/30 or 10/40 oil.
Use 10w40 4-stroke motorcycle oil. DO NOT use any type of automotive oil; motorcycle oil is needed because of the wet clutch.
If it is a 2 stroke use 80/90. Weight gear oil. If its 4 stroke run what specified on the engine
Depends on the manufacturer as to what type and weight oil to use.
trochoid