1996 Chevrolet Astro Owner's Manual - Page 231

What to Use Refer to the Maintenance Schedule to determinewhat kind of lubricant to use. See "Recommended Fluids and Lubricants" in the Index. Engine Coolant The following explainsyour 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. The proper coolantfor your vehicle will: 0 Give freezing protection down to -34°F (-37°C). Give boiling protection up to 262 O F ( 1 28 O C). Protect against rust and corrosion. Help keep the proper engine temperature. Let the warning lights and gages work as they should. 0 0 0 0 What to Use Use a mixture of one-half clean wafer (preferably distilled) and one-half antifreeze that meets "GM Specification 6038-M," which won't damage aluminum parts. You can also use arecycled coolant conforming to "GM Specification 6038-M. Use GM Coolant Supplement (Sealer) with a complete coolant flush and refill. If you use this mixture, you don't need to add anything else. 6-23