Abstract: An adjustable double-roller oil feeder includes a top frame having oil drain holes with respective flow rate regulating valves, a first roller supported on two opposite bearing blocks by bearings and disposed below a top frame to receive the lubricating oil from the oil drain holes of the top frame, a bottom frame, a second roller supported on springs inside a longitudinal trough to receive the lubricating oil from an oil intake pipe, the second roller comprised of a master oil filling rod, two oil pipes connected between the two opposite ends of the second roller and the two opposite ends of the oil guide hole through the top frame for allowing the oil feeder to be tilted sideways, and curved oil guide tubes optionally fastened to the oil drain holes for guiding the lubricating oil to the first roller as the oil feeder is tilted backwards.