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I found this information in the 2015 owners manual. I hope it is what you are looking for. If you want to get your own copy of the entire manual, it is available HERE.
The manual also days that 91 octane is recommended, although not mandatory.
See the thread titled "Regular or Premium" which now has more than 80 thousand views and 320 replies and then go with the recommendation in your owner's manual, 91 octane.
