1998 Chevrolet Corvette Owner's Manual - Page 264

Change both the fluid and filter every 50,000 miles (80 000 k ) the vehicle is mainly driven under one of m if these conditions: In heavy city traffic where the outside temperature F regularly reaches 90 O (32 O C ) or higher. In hilly or mountainous terrain. High performance operation. If you do not use yourvehicle under one of these conditions. Change the fluidand filter every 100,000 miles (166 000 km). See "Scheduled Maintenance Services" in the Index for the proper service intervals for thetransmission fluid and filter. How to Check Because thisoperation can be difficult, you may choose to have done at your Chevrolet dealership this Service Department. If you do ityourself, be sureto follow all the instructions here, or could geta false reading. you NOTICE: Too much or too little fluid can damage your transmission. Too much can mean that some of the fluid could come out and fall on hot to exhaust system parts, starting a fire. Be sure get an accurate reading if you check your transmission fluid. off, Check the fluid level only when your engine is the vehicle is parked on a level place and the transmissionis cool enough for to rest your fingers on the you transmission case. Manual Transmission Fluid When to Check A good time to have it checked is when the engine oil is changed. However, the fluid in your manual transmission doesn't require changing. 6-19