LPG engine oils are premium quality lubricants compounded with a non-metallic (ashless) detergent and an excellent ashless dispersant, as well as oxidation and corrosion inhibitors. They are specially formulated for two-and four cycles naturally aspirated and turbocharged natural gas/LPG fueled engines. Use where very low ash or ashless oils are permitted in low- to medium speed, two and four-cycle engines such as Ajax, Cooper-Bessemer and Dresser-Rand (Ingersoll-Rand) Category I generally used in gas gathering operations.