When i turn my overdrive off it spikes the RPMs through all gears and keeps the truck at a higher range to make it easier for towing/accelerating with a trailer without putting too much strain on the truck. Jerrod's problem is that it doesn't do that. With the overdrive on or off it runs the same. However, that may just be how diesels are set up because the make stupid amounts of torque compared to a gas motor.
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Hybrid Mode
