GotQuestions? Lubricants

Q. Do natural gas engines need different engine oil?

May 12, 2014

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A. If the natural gas engine is spark ignition and operates totally on compressed or liquefied natural gas, major engine manufacturers recommend a natural gas engine oil as opposed to an oil designed to operate on diesel fuel engine and compression ignition. There are engines that can be set up to operate on dual fuel which allows the engine to run on natural gas or diesel fuel. These engines are compression ignition and utilize conventional diesel engine oils such as API CJ-4 engine oils. Cummins Westport, for example, does require that a natural gas engine oil must be used in their spark ignition engines. Cummins Westport lists these engines oils as complying with the Cummins--CES 20074 specification. It is equally important as in all cases to know the specific manufacturers recommendations.

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  1. 1. Moe Gutierrez [ January 20, 2016 @ 07:37PM ]

    What would be the side effects of any using cng low ash 15w40 in a gasoline combustion engine ?


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Author Bio

Mark Betner

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Heavy Duty Lubricants Manager

Mark Betner boasts 35 years of experience in the lubricants business. As the Heavy Duty Product Manager for CITGO Lubricants he is responsible for initiating and implementing the marketing of new products and human development programs and oversees communications with the media, trade shows and consumer education.

Prior to this, he was a field sales manager and technical training administrator at an independent lubricant company specializing in heavy equipment lubrication.

Mark earned a master’s and bachelor’s degree in both chemistry and biology from Indiana University. He holds a certification from the Society of Tribologists and Lubrication Engineers and is a member of the Truck Maintenance Council.


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