The Moroso Self Contained Oil Preheater is specifically designed for heating oil; it does not scorch or boil the oil like ''converted water heater'' designs. Operates on 110-120 volts and produces 400 watts of power. Includes a aluminum, 1/2'' -14 NPT weld-in bung and 3 ft. cord. Heating element is 4-3/4'' from the fitting to the tip. Heats 12-quarts of oil to 60°F in 25 minutes.