Castrol Axle GO-J 90 is a specially formulated extreme pressure gear oil for Mack differentials, transmissions and gear cases. It is also suitable for use in other truck, commercial vehicle and earthmoving applications where SAE 85W-90 or SAE 90, API GL-5 is specified.

Advantages
High oxidation stability provides longer oil life enabling longer drain intervals
Excellent EP performance protects highly loaded gears, extending equipment life especially under heavily loaded conditions
High thermal stability ensures no performance loss at high temperatures, increasing drain intervals and reducing sludge and gear deposits
Excellent elastomer compatibility extends seal life and reduces oil usage and maintenance costs

Performance claims
API GL-5
Mack GO-J Dana S5M-65
Approved for use in Mack Transmissions, differentials and transfer cases.
Approved for use in Hino axles.