1998 Chevrolet Corvette Owner's Manual - Page 329

Maintenance Schedule 100,000 Miles (160 000 km) (Continued) 0 Change automatic transmission fluid and filter if the vehicle is mainly driven under oneor more of these conditions: - In heavy city traffic where the outside temperature regularly reaches 90°F (32O C) or higher. - In hilly or mountainous terrain. - Uses such as high performance operation. Manual transmission fluid doesn't require change. 0 If you haven't used your vehicle under severe conditions listed previously and, therefore, haven't changed your automatic transmission fluid, change both the fluid and the filter. Manual transmission fluid doesn't require change. 150,000 Miles (240 000 km) 0 Drain, flush and refill the cooling system (or every60 months since last service, whichever occurs first). See "Engine Coolant" in the Index for what to use. An Emission Control Sewice. DATE MILEAGE I 7-10 I