Dear all Sifu, I'm a newbie and have just registered myself here, going to own myself a bmw soon. : )But I have a question and need professional advice from sifu.I am intending to purchase a used 2007 e90 320i, I saw a unit, quite nice but there is one thing I am unsure as the owner did told that the car is running under petrol RON95. As I heard from some, that new cars are suppose to run RON97. So, my question here, is it going to damage the engine for e90 running on RON95? I am worry that after purchasing it I need to spend loads to repair it. Please advice. Thanks in advance.Kind regards, David