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Q. How can using different engine oil help improve my fuel mileage?

October 29, 2012

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A. Low viscosity heavy-duty diesel engine oils, when compared to SAE 15W-40, may provide levels of improved fuel efficiency.

SAE 10W-30, 5W-40 and 5W-30 are examples of lower viscosity grades that have field-proven results of improving fuel efficiency.

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Mark Betner

Lubricants Expert

Citgo Lubricants
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