The precision electromagnetic pump delivers the same volume of oil every stroke, regardless of temperature or oil viscosity.
Sure we could use a cheaper pump (like our competition) which will reduce the price of a Pro-Oiler kit, or increase our margin, but we have tested all sorts of pumps, this was the BEST!
This insensitivity to viscosity differences allows the PRO-OILER to perform consistently in all climatic conditions - and this is one of the key differences compared to the typical gravity-feed system.
For more info, see the FAQ and the pictures in the Gallery.