Hitachi ZW 180-6 Operator's Manual page 291

Transmission Oil
Kind of Oil
Application
Air Temperature
Oil Specification
f
NOTE: When the atmospheric temperature is below -20 °C: Contact your authorized dealer.
Axle Oil
Kind of Oil
Application
Air Temperature
Recommended Product
Alternative Product
f
NOTE:
 When using TO-4 SAE50 Fluid other than the listed recommended products, add 6% friction
modifier or "anti-chatter" additive to prevent or eliminate service brake application noise.
Recommended additive package for universal tractor fluid: HCM 9990A or Afton Hitec8703
or equivalent.
 The acceptable ambient temperature when using TO-4 SAE50 Fluid should fall within the
range -15 to 40 °C (5 to 104 °F).
 For extremely low ambient temperatures, lower viscosity or synthetic oils may be required.
MAINTENANCE
Transmission and Torque Converter
Hitachi
TO-4 SAE50 Fluid, with 6% friction modifier
7-19
Engine Oil
-20 to 45 °C (-4 to 113 °F)
API CF 10W Class
Gear Oil
Axle & Wet Disc Brake
-20 to 45 °C (-4 to 113 °F)
High Gear Oil
TKTT15150-4th