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Chevron’s new heavy-duty motor oil, Ursa Super Plus EC SAE 10W-30, was designed to improve fuel economy in heavy-duty diesel trucks in both on- and off-highway applications.
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For two decades, we have seen a new API oil classification for on-highway heavy duty diesels every few years. This time, it's different.
Read More →There are questions aplenty about the oils and fuels that must be used in the new '07 engines.
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