Proheat Heavy Duty Fluid Reservoir Heater Model 1325 (500 Watts, 4.2 Amp, 120 Volts) Ideal for Oil Pans from 3 to 6 Gallons of Lube (12 to 25 Litres) and from 20 to 50 Gallons of Hydraulic Oil Proheat Products 1325 FLUID HEATER 500 - (1 Each)