See also:

When to Inspect the Engine Air Cleaner/Filter
Inspect the air cleaner/filter at the scheduled maintenance intervals and replace it at the first oil change after each 80 000 km (50,000 mi) interval. See Maintenance Schedule  for more info ...

Special Application Services
Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000 mi. Have underbody flushing service performed once a year. ...

Recommended Fluids andLubricants
Fluids and lubricants identified below by name, part number, or specification may be obtained from your dealer. ...