1997 Chevrolet Astro Owner's Manual - Page 357
1997 Chevrolet Astro Manual
Page 357 highlights
I LongTrip/HighwayMaintenance 30,000 Miles (50 000 km) 0Change engine oil and filter (or An Emission Control Service. Schedule 1 every 12 months, whichever occurs first). 0Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches90°F (32 O C) or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. I f you do not useyour vehicle under any these of El Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.) 0Check readfront axle fluid level and add fluid as needed. Checkconstant velocity joints and axle seals for leaking. (See footnote **.) 0For Two-Wheel-Drive vehiclesonly: Clean and repack thefront wheel bearings (or at each brake relining, whichever occurs first). conditions, change the fluid and filter every 30,000 miles (50 000 km). (Continued) n mm