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  1. Premium or Regular 87 Octane for 2015 2.7 Ecoboost?

    2nd Gen F150 Ecoboost
    I've searched a number of times for this, but newbie as of today so my apologies if this has already been discussed. The dealer said to use 87 octane. The manual mentions the same. But with twin turbos, it seemed to me that a higher octane would be needed? No bro-science replies, please...