The majority of planes have full manual control for their radiators, with some notable exceptions. Full manual control in this scenario means the player having to manually both the oil radiator and the engine/water's radiator when switching to MEC. Most biplanes do not have any form of radiator control relying on throttle and propeller pitch (if they have it). Planes such as the Spitfire Mk I(Spitfire Mk IIa) and Spitfire Mk Vb only have radiator controls for the engine itself or water, leaving the oil to be passively cooled or automated. Others such as the Bf-109 F series onwards and some late-war planes have fully automated radiator control when switching to MEC, but can be changed to manual control by a button toggle. Jets do not use radiator control.
A noncombusting electric oil-filled heater that distributes heat primarily by natural convection currents and low temperature radiation. Its appearance is similar to an old steam radiator. It is usually 2 to 2 1/2 feet tall and uses 1500 watts of electricity.