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Message: <blockquote data-quote="Schwepps" data-source="post: 388928" data-attributes="member: 3592">Ennui, engine manufacture is with finer tolerances these days, compared to the old days when maunfacturing wasn't so precise and a lot of metal was worn into the first oil. But here's where people, including some service personnel, make the mistake of thinking that running-in a car isn't necessary now. Because the engine isn't the ONLY thing that needs to be run-in; so does the gearbox, drivetrain, suspension, brakes and tyres.As our Owner's Handbook says, observing run-in rules ensures optimum performance and fuel economy. It's just a matter of not overdoing the acceleration and speed for the first 2k. You are right to err on the side of caution. :wink:</blockquote>