DM Advantage Reman fan drives from Horton are suitable for applications with little or no ram air. Engineered for efficient engine cooling for vocational and on- and off-highway vehicles, the two-speed drives alternate between eddy current, low-speed, and spring-actuated cooling. Using permanent magnets in eddy current, the drives turn the fan at a lower speed of approximately 500 rpm. Eddy current operation is suitable for low-end cooling requirements, such as air-conditioning, hydraulics, and intake air. DM Advantage fan drives can be used as drop-in replacements for existing on/off fan drives and can replace multispeed fan drives. Benefits include improved fuel savings and engine performance, reduced noise, increased horsepower for auxiliary systems, minimized radiator abrasion from dust and debris, improved air-conditioning performance, and increased fan drive, tensioner, and felt life.