1997 Chevrolet Astro Owner's Manual - Page 281

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. WhatUse to . 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 s stem in your vehicle is filled with new is DEX-COOL J engine coolant. This coolant designed to remain in your vehicle for 5 years or 150,000 miles (240 000 km) whichever occurs first, if you add only DEX-COOL' extended life coolant. The following explains your cooling system and how to add coolant when it is low. If you have a problem with engine overheating, see"Engine Overheating" in the Index. How to Check Lubricant A 50/50 mixture of water and DEX-COOL@ coolant for your vehicle will: Give freezing protection down to -34°F (-37°C). Give boiling protection up to 265°F (129°C). Protect against rust and corrosion. 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. Help keep the proper engine temperature. 0 Let the warning lights and gages work as they should. 6-25