Oil & Fuel Frt. axle hub luricant

[Benzmender]

Hi, i have a Shibaura 2843t [ Ford 1710 ] 4x4. Does anybody know what type of fluid the front axle Hub housing takes? Not the main axle but the gear reduction housings on each end where the wheels bolt on.I think its 80 or 90 weight but im not sure if it might take a special fluid and is there a specific amount to use or do you fill it to the bottom of the fill plug hole, like a car rear diff. I havent purched a manual yet and everything on the tractor is written in Japaneese. Thanks for any help!!!!!!

 

[lens12]

80/90 gear oil.