Drive a 93 Aero Cabrio with 6 gears circuit for about 14 days. From the beginning, the 2nd gears were difficult to install. In the warm operating conditions, switching became easier. After motorway operation flawless. However, in the morning, when the engine is cold, the 2nd gears are annoying. Does anyone have similar problems? Or was this solved by a corresponding grated oil (viscosity)? Are gear oil additives recommended here? For a short information I am grateful.