Amsoil Synthetic Synchromesh Transmission Fluid. Widely accepted as being the best lubrication for the 1990~1995 ZR-1 Corvette ZF6-40 transmission.

Specifically designed to deliver smooth shifts and superior wear protection in manual transmissions and transaxles with sychronizers:

• For use in applications that require GM Part #12345349, #12345577, #12377916 & #1052931
• For use in applications the meet GM Specs #9985648, #9986105 & #9985535
• Excellent performance at temperatures from: -40F° to 300°F
• NOT FOR USE IN Engines or limited slip applications
• Made in USA