Show study oil viscosity and torque needed to start some attention lias has been given by the bureau of standards department of to the rotation relation between oil viscosity and the torque required to start tin in automobile engine in fit rotation or to bring it up to a given speed from the results thus fur far obtained it appears that while the viscosity of the oil does have a pronounced effect upon the power required to crank the engine nt at speeds of y r p in and higher hl it does not have anny appreciable influence upon the torque required to start the engine rotating |