18000 MI or 28800 KM

Lubricate
    Universal Joint, Drive/Propeller Shaft
      If equipped.
    Steering and Suspension
      Lubricate steering linkage.
    Slip Yoke
      If equipped.
Check
    Air Filter Element
      Extremely dusty conditions will require more frequent replacement of air filter. Check every 3,000 miles until a replacement interval can be established.
Replace
    Oil Filter, Engine
    Engine Oil