Use standard hypoid-type gear oil GL-4, SAE 90W when refilling the steering gear.
FLUID LEVEL CHECK
See Figure 1
Every year or 15,000 miles (24,000 km) you should check the steering gear housing lubricating oil. The filler plug is on top of the housing and requires a 14mm wrench for removal. The level should be 18-28mm from the top on 2WD models and 14-17mm from the top on 4WD models.