What is overdrive in Volvo 244 DL?

Overdrive in the Volvo 244 DL refers to a driving mode that allows the engine to run at lower RPMs while maintaining higher speeds, improving fuel efficiency and reducing engine wear. When engaged, overdrive shifts the transmission into a higher gear, which decreases engine load and noise. This feature is particularly beneficial for highway driving, as it enhances comfort and fuel economy. In the Volvo 244 DL, overdrive can typically be activated via a switch on the gear lever.