The number preceding the "W" is the "winter weight". I'm not sure how they compute it, or what it stands for, but basically, a "5W-XX" can be pumped by your engine at a lower temperature than a ...
Chevron Products Company has announced the introduction of Ursa Super Plus EC SAE 10W-30 motor oil to the United States and Canada. This new heavy duty motor oil is designed to help improve fuel ...
Chevron's Ursa Super Plus EC SAE 10W-30 heavy-duty motor oil helps protect engine components against wear and corrosion, and has tested to show improved fuel economy relative to SAE 15W-40 diesel ...
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