! Studiu privind consumul a unui "quart" de ulei intre intervalele de service, facut pe aprox. 500.000 de masini. P.S. 1 quart = 1,13 litri ulei Sursa: https://www.consumerreports.org/cro/magazine/2015/06/excessive-oil-consumption/index.htm Mai adaug cateva informatiile aditionale, specifice motoarelor BMW. Scuze ptr ca nu am facut traducerea, dar cred ca este usor de inteles. BMW attributes oil top-up frequency to the luxury vehicles’ long intervals between oil changes -- 10,000 miles -- and BMW engines may consume up to 1 quart of engine oil per 750 miles under certain driving conditions The traditional oil-change frequency recommendation is every 3,000 miles, but fine-tuning in engine manufacturing and oil technology has led some automakers to extend that to 7,500-10,000 miles. “Oil consumption is normal on all engines as it is necessary to properly lubricate the cylinder walls, pistons, piston rings, valves and turbochargers,” BMW spokesman Hector Arellano-Belloc wrote in an email. Sursa:http://www.autonews.com/article/20150630/RETAIL05/150639990/newer-audi-bmw-subaru-models-use-lots-of-oil-consumer-reports-survey