An energy-saving workhorse, the FS Curtis OL Series 5-15HP Reciprocating Air Compressor’s 100% dry crankcase provides oil-less compressed air for critical applications with zero oil carryover. It’s environmentally friendly with no oil vapor generated by the compressor, which eliminates the need for oil changes and oil disposal costs. The low-speed pump and robust cast-iron crankcase, cylinder, and cylinder head ensure that the OL will offer long-term reliability and long-lasting performance.