GotQuestions? Lubricants

Q. If you were to mix 10W -30W with 15W -40W what would you get for W?

August 28, 2013

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A. Depending on the proportion of the each that you mix, the results will vary. By mixing two different products, the end result no longer either grade, but something in between. Without knowing the exact proportions, and even brands, there is no way to for sure.

So summarize it would not be 12.5W -35W.

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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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