1993 Chevrolet S10 Pickup Owner's Manual - Page 269

Rear Axle When to Check and Change Lubricant: Refer to theMaintenanceSchedule to determinehow often to checkthe lubricantandwhen to changeit.See"ScheduledMaintenanceServices" in theIndex. How to Check Lubricant: KO996 If the level is belowthebottom of thefillerplughole,you'llneed to add somelubricant.Addenoughlubricant to raisethelevel to thebottom of the filler plug hole. What to Use: Refer to the MaintenanceSchedule to determinewhatkind of lubricant to use.See"RecommendedFluidsandLubricants" in theIndex. Four- Wheel Drive Mostlubricantchecks in thissectionalsoapply to four-wheeldrivevehicles. However, theyhavetwoadditionalsystemsthatneedlubrication. Transfer Case When to Check Lubricant: Refer to theMaintenanceSchedule to determinehowoften to checkthe in the Index. lubricant.See"PeriodicMaintenanceInspections" 6-21