Buyers Products' aluminum hydraulic reservoirs come with a tank-mounted, return-line filter that is constructed of 0.125" thick smooth aluminum with welded mounting angles. The reservoir features an oil-level gauge with temperature indicator and an interior baffle between suction and discharge. The reservoir has an 18-gallon usable capacity and reduces component installation costs by being predrilled for a tank-mounted filter. The company also offers a 30-gallon, stainless steel reservoir with valve enclosure. Made from durable 10-gauge, 304 stainless steel, the reservoir features a 50-gallon-per-minute, tank-mounted return line filter with a 1 1/4" port.