1996 Chevrolet S10 Pickup Owner's Manual - Page 328

The services shown in this schedule up to 100,000miles (166 000 km) should be performed after 100,000 miles (166 000 km) at thesame intervals. ** Drive axle service: 0 Footnotes The U.S. Environmental Protection Agencyor the California Air Resources Board has determined that the failure to performthis maintenance item will not nullify the emission warrantyor limit recall liability prior to the completion of the vehicle's useful life. We, however, urge that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded. 0 Locking Differential -- Drain fluid and refill at first engine oil change. Atsubsequent oil changes, check fluid level and add fluid as needed. If driving in dusty areas or towing a trailer, drain fluid and refill every 15,000 miles (25 000 km). Standard Differential -- Check fluid level and add fluid as needed atevery engine oil change. If driving in dusty areas or towing a trailer, drain fluid and refillevery 15,000 miles (25 000 km)...More frequent lubrication may be required for heavy-duty or off-road use. 0