Rear Final Gear Oil - Honda FourTrax Rancher TRX420FE1 2019 Owner's Manual

Oil Recommendation
type
viscosity (weight)
suggested oil
Changing Oil
Refer to Safety Precautions on page 101.
Change the oil with the rear final gear at normal operating
temperature to assure complete and rapid draining.

Rear Final Gear Oil

hypoid gear oil
SAE 80W-90
Honda shaft drive oil or equivalent
Servicing Your Honda 129