1997 Chevrolet Astro Owner's Manual - Page 363
1997 Chevrolet Astro Manual
Page 363 highlights
82,500 Miles (137 500 km) - 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 use your vehicle under any o these f conditions, change the fluid and filter every 30,000 miles (50 000 km). 0Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. . 0Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.) El Check readfiont axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote**.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) I DATE I ACTUAL MILEAGE ISERVICED BEI 7-39