transamz9 wrote:It takes torque to keep the vehicle speed up. RPMs measure engine speed, which can easily be increased by downshifting in the transmission.I don't care how you look at it , it takes torque to keep the RPM's up.
transamz9 wrote:Of course it can. The whole point of a transmission is the put engine RPMs in the optimal range at whatever speed the vehicle is moving. It's just that with a gas engine, those RPMs will (usually) be higher than with a diesel.A gas motor can't make the torque at highway speeds to keep the RPM's up when put under a load without going out of it's optimum RPM range.
