2019-10-06 N54 bmw x6 sound from oil cooler / alternator. Intermittent. The sound is not constant even at same rpm. Mostly it goes away once rpm is raised a bit. Changed oil filter and it was fine... from 自動車動画番組まとめ毎日更新(中古車・プリウス・アルファード・ベンツ等) https://ift.tt/2Oofoa9 via IFTTT