Attaches to oil pan, intake manifold, battery holder or engine block. Used on snow blowers, chainsaws, snowmobiles, or other small engines. It may also be used for warming hydraulic systems or thawing frozen locks, pipes, gutters, livestock feeders. Oil and transmission fluids thicken and do not circulate well at cold temperatures. Magnetic heaters transmit heat continuously to keep oils flowing, giving you instant lubrication when starting your engine.