Originally Posted by Power Surge
The way I read that verbage in the manual, is that it means in areas where regular is considered lower than 87 octane, to use fuels labeled premium for better performance (especially in high altitude areas).
I think if that is what they meant to say they would have written just as you did, but they didn't. To me it is two separate thoughts, Don't use less than 87 octane
, and they told you where that might be encountered, and premium fuel will provide an increase in performance
. Simple. Plus my experience using shell V-Power has shown me, that just as in the video, oh yea, did anyone watch the video, I am getting an increase in performance using premium.