1997 Chevrolet S10 Pickup Owner's Manual - Page 260

What to Use Refkr to the Mainteriance Schedule to determine-what kind of lubricant to use., See "Remmmended Fluids and Lubricants" in the Index. How to Check Lubrimnt Four-Wheel Drive Most lubricant checks in this section also apply to four-wheel-drive vehicles. However, they have two additional systems that need lubrication. Transfer Case When to Check Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant. See "Periodic Maintenance Inspections" in the Index. If the level is below the bottom of the.filler plug hole, you'll need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole. What to Use Refer to the Maintenance Schedule to determine what kind of lubrican-t-to use. See "Recommended Fluids and Lubricants" in the Index.