Abstract: Various disclosed embodiments include oil systems, electric motors, and vehicles. In an illustrative embodiment an electrical motor system includes an oil reservoir, a motor, and an oil delivery system. The oil reservoir is configured to hold oil therein. The oil delivery system includes a heat exchanger. The oil delivery system is configured to operate in a low-temperature mode, bypassing the heat exchanger, while the oil temperature is below a first predetermined temperature; operate in a high-temperature mode, directing oil traversing the oil delivery system through the heat exchanger while the oil temperature is above a second predetermined temperature; and operate in an intermediate-temperature mode, partially bypassing the heat exchanger while the oil temperature is between the first predetermined temperature and the second predetermined temperature.

Abstract: Various disclosed embodiments include oil warming systems, electric motors, and vehicles. In an illustrative embodiment a system includes an oil reservoir, a motor stator, and an oil pump. The oil reservoir is configured to hold oil therein. The motor stator is positioned such that at least a portion thereof is positioned within the oil reservoir where the at least the portion of the motor stator is in thermal communication with the oil while the oil reservoir includes the oil therein. The motor stator is configured to warm the oil while in an oil warming mode. The oil pump is fluidly coupled to the oil reservoir and is configured to draw oil out of the oil reservoir.

Abstract: Various disclosed embodiments include oil systems, electric motors, and vehicles. In an illustrative embodiment an electrical motor system includes an oil reservoir, a motor, and an oil delivery system. The oil reservoir is configured to hold oil therein. The oil delivery system includes a heat exchanger. The oil delivery system is configured to operate in a low-temperature mode, bypassing the heat exchanger, while the oil temperature is below a first predetermined temperature; operate in a high-temperature mode, directing oil traversing the oil delivery system through the heat exchanger while the oil temperature is above a second predetermined temperature; and operate in an intermediate-temperature mode, partially bypassing the heat exchanger while the oil temperature is between the first predetermined temperature and the second predetermined temperature.