Worst oil leak I ever saw was on a RAAF Convair 440 Metropolitan when during the take off, the main oil line to the oil cooler split asunder and we lost the full contents of 35 gallons very quickly which resulted in a runaway propeller at 800 feet. Fortunately the oil tank had a stand-pipe with just enough to feather the prop. The oil leak soaked the wheel well, the brake units and all over the elevator area.