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Can I use 10w 40 weight oil in my XL7

Answers from the Automotive Experts

Jessica Howe, Automotive Expert & Coach at


Thank you for writing in. According to the information I was able to find, you need 5w-.30 engine oil for your vehicle. 10w 40 is going to be thicker, and less useful in cold temperatures.Considering it is summer, you may be fine running the heavier oil as it will keep the engine protected from extremely high temperatures. 

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