I'm curious as to what some of the major and minor differences are when it comes to the Outback 2.5i and 2.5XT engines? On the inside of the gas lid for the 2.5XT's, there is a sticker that says to use PREMIUM gasoline only (octane 91 or higher if I remember right is written on the sticker). Does using the premium gas only give a performance increase, or is using premium gasoline required because using less octane fuel could damage the engine?
I'm curious about this because I would like to get a 2.5XT but if it requires premium fuel then that would be too much for my budget.
Brad