SUNOCO DURAGEAR FE Synthetic 75w-90 is a synthetic automotive and heavy duty equipment gear oil. DURAGEAR is a line of Lubricants manufactured by Sunoco that is a full synthetic formulation that exceed API GL-5, API MT-1 specifications and is approved for extended drain intervals. "FE" offers enhanced friction reduction properties and exceptional shear stability that can translate into increased Fuel Economy in some applications. 75w-90 represents the thickness of the oil based on Society of Automotive Engineers (SAE) standards. 

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