On a Farmall B the gearbox holds 1 1/2 gallons of 40w oil.
5 gallons of 90 wt.
did not give me the oil amount but some interesting information http://www.tractordata.com/td/td299.html
5 quarts
how much auto trans oil in pugeout 306
4
8 pints
<1 qt. of 75w90 gear oil.
Yamaha Viraho 750 holds cca 2 dcl of gear oil. I think it will be about the same.
800ml in the gear box.
Manual gear box 2 litre Automatic gear box comes as sealed unit
It will hold almost 3 pints.
Gear oil is normally a much heavier oil.