If you own ETS2 on Steam, you can legally roll back to any previous version, including 1.37. Here is the step-by-step process:
This allowed for a more dynamic and realistic soundscape, including "reverb" effects in tunnels, a true Doppler effect for passing AI traffic, and unique engine sounds for different truck models. download ets2 1.37
Because version 1.37 introduced a completely new sound engine, many older sound and engine mods from version 1.36 and earlier are incompatible and may cause the game to crash. Always back up your profile before updating. If you own ETS2 on Steam, you can
Euro Truck Simulator 2 Update 1.37: Revolutionizing the Road with FMOD Euro Truck Simulator 2 (ETS2) If you own ETS2 on Steam
This specific update was a major milestone for the game, introducing: FMOD Sound Engine: