10w40 will do.
20w50
10W40, 3.5 liters for a V45 1982
Always use the Honda brand oil. 10-40.
10w40?
10w40
If you are referring to the viscosity of the oil, 10w40 is the suggested viscosity for the Honda CRF50. Also try to switch to Amsoil and see the difference.
10w40
Honda motor oil 10 w40 sj only
3.3 quarts
SAE 10w30.
20w50
i just rebuilt my 1982 Honda xr 100 and just good old fashioned 10w 30 motor oil it does just fine . You need to run straight 30 oil in your motor for it does not have an oil filter, this may not sound right but straight 30 traps dirt and keeps it at the bottom of the motor. This is an old school trick I am not shure what viscosity the factory oil is but in the long run it will pay off to run straight 30. Good luck