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Apparently Hyundai has released a TSB that says the preferred oil is 5W40. Have you guys heard that?

Most cars are going to thinner oils I can't imagine why Hyundai would start suggesting 5W-40.

According to the manual: "For better fuel economy it is recommended to use the engine oil of viscosity grade 5W-30 (ACEA A5 or above). However, if the engine oil is not available in your country select the proper engine oil using the engine oil viscosity chart."

In case the chart is not visible, it shows 5W-30 and 5W-40 covering the same temperature range.


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