Transfer Oil Replacement.

Replace the oil every 100,000 km (62,137 miles) in a general condition and every 40,000 km (24,854 miles) in severe usage conditions.
NOTE:
1. Severe usage (marked *) is defined as
  1. Frequent driving on rough road (Bumpy road, gravel road, snowy road, unpaved road. Etc.)
  2. Frequent driving on mountain road, ascent/descent.
  3. Police, taxi, commercial type operation or trailer towing. Etc.)
2. Transfer & Diff carrier lubricants should be changed anytime transfer & Diff carrier have been submerged in water.