Originally Posted by Kabigon
You clearly do not understand the engine management of the 2012 Focus, therefore your generalizations about octane do not apply.
I don't understand why so many people have a hard time wrapping their heads around VVT.
Originally Posted by 2012FocusSEL
I apologize if that had already been stated. I was reading through the owners manual for the oil capacity and came across that in my reading. Any who those who prefer to see physical evidence here's a pic out of the owners manual for your viewing pleasure!
You mean the part that states; "Premium fuel will provide improved performance"?
I'm staying out of this one. All I know is since I got my car 11,500 and 10.5 months ago I've only for the most part used E0 91 octane. If E0 isn't available I just use 87 - which is rare. If
I have to use 87 I always notice a decrease in fuel economy and SOTP performance.