Towing with overdrive
Not only purists, but some of us old people remember when only manual shift cars had overdrive and there were many combinations of how to shift into overdrive from a manual lever to an electric switch. Sometimes an electric switch was placed under the accelerator to switch out of overdrive back to a lower gear, thus a "passing gear." I also remember a Columbia overdrive differential on some older Fords that was shifted with a vacuum setup. Just rambling.
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