Okay, so I bought my first BMW a few weeks ago, and let me start by saying that I'm a woman who really doesn't know a whole
lot about cars. I'm not a COMPLETE idiot, I just need some info. I have a 2006 325i, I know, nothing THAT
special, but I need to know about fuel, in LAYMEN'S terms.... Do I REALLY need premium? I've read about how it doesn't perform 100%. If you use regular, performance is decreased by about 5%?? Basically, what is the bottom line? Will I be damaging the engine by not using premium? This isn't a money issue, gas is expensive either way.. I've read that in the long run it will end up costing more by using a lower octane. Is this true?
Just want a subjective answer from someone (perhaps a mechanic??) Is the engine in an '06 325i really that evolved that it NEEDS higher octane fuel? I read something saying that the only engines that really need it are those with superchargers... I respect the advice and opinions on this forum as people seem to know what they're talking about. Thanks