Many old trucks had 2 speed instructions on the dash. Eaton advised trucks to be parked in Low Range. We did this because the E-brake was almost worthless and we used the lowest gear we had for parking. When we drove empty, we started in Low range and shifted into high range once we got to hi gear. Trucks were so underpowered that we had to split shift them with a load. Learning to shift a 2 speed was part of learning to drive a truck and most of us learned between the ages of 12 and 14.
