when do you use overdrive on a truck
Overdrive (mechanics) Generally speaking, overdrive is the highest gear in the transmission. Overdrive allows the engine to operate at a lower RPM for a given road speed. This allows the vehicle to achieve better fuel efficiency, and often quieter operation on the highway. When it is switched on, an automatic transmission can shift into overdrive mode after a certain speed is reached (usually 70+ km/h [40-45 mph or more] depending on the load). When it is off, the automatic transmission shifting is limited to the lower gears. Overdrive should usually be selected when the average speed is above 70 km/h (40-45 mph).
Darrell Ward Darrell Ward (August 13, 1964 â€“ August 28, 2016)[1][2] was an American reality television personality. He was a truck driver featured on Ice Road Truckers from Season 6 in 2012 until his death. He was from Deer Lodge, Montana, and died in a plane crash.