was size'ng up and test drove an '08 550,asked for the owners/service manual.BWM recommends using BMW high performance 5w30..if not avail.,yu can use Mobil 1 5w30 or
5w40..riverside ca. dealer was asking $9.49 for their BWM
5w30.
5w40..riverside ca. dealer was asking $9.49 for their BWM
5w30.