An overdrive gearbox adds an extra gear ratio that enables the car or truck to cruise at large speeds with decrease motor RPMs. This not just enhances fuel effectiveness and also lowers motor have on and noise. Many early versions of those transmissions were semi-computerized in Procedure, like Autostick, which https://automobile-gearbox74950.thenerdsblog.com/39936627/automobile-gearbox-for-dummies