1996 GMC Safari Owner's Manual - Page 255

Rear Axle When to Check and Change Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant and when to change it. See "Scheduled Maintenance Services" in the Index. What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See "Recommended Fluids and Lubricants" in the Index. Engine Coolant The cooling system in your vehicle is filled with new DEX-COOL" (orange-colored, silicate-free) engine coolant. This coolantis designed to remain in your vehicle for S years or 100,000 miles (166 000 km), whichever occurs first. The following explains your cooling system and how to add coolant when it is low. I f you have a problem with engine overheating, see"Engine Overheating" in the Index. A SO/SO mixture of water and the proper coolant for your vehicle will: 0 How to Check Lubricant Give freezing protection down to -34°F (-37°C). Give boiling protection up to 265 "F ( 129°C). Protect against rust and corrosion. Help keep the proper engine temperature. Let the warning lights and gages work as they should. 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. 6-25