I've seen several posts about chaging oil earlier than BMW recommends but I haven't seen any reasons for this. Has anyone found the oil changed at 15k to be of poor quality? I can't see why BMW would lie about it to "save money" on included maintenance since they would be responsible for any engine problems that might cause (talking about leases that get turned in and sold as CPO's.)
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2014 335i f30 M Sport, Mineral Gray, Premium, Nav, Comfort Access, M Sport Brakes, 18" Potenza RFT Summer/Staggered
2011 328xi e92 M Sport, Space Grey, Premium, Nav, Comfort Access, BMW Apps
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