Interesting thread - I normally use standard shell unleaded in the
MC, but I use V-Power all the time in my X5. I found that it gives me about 2mpg more than standard fuels. Had to stick some normal BP in last week, and boy has it been sluggish, MPG back down too! On the change from optimax to V-power; i found very little difference in fuel economy but did notice the better acceleration.
