This mod requires ETS2 1.31 or 1.32.Changelog (1.0) – Initial release  This is not a modified allison gearbox. This is not the ultra slow opticruise you were using so far. This is a sequential gearbox capable of changing gears in 0.001 seconds, without slippage or torque losses. Try it and you will not want to use others. Available in 6, 7, 12 and 16+2 speeds.  Transmissions included: OLSF iDCT-6R Gen3 OLSF iDCT-7R Gen3 OLSF iDCT-12R Gen3 OLSF iDCT-16R Pro Gen3 Credits: OLSF