Sorry if this is a sticky, but I am having a nightmare on mobile right now. What kind of synthetic motor oil do you guys use for a 2010 and how often do you replace it and the filter? Thank you for any kind responses. Just bought my car 3 days ago from a Subaru so they did not have all the info for me. P.s. I drive about 15k a year and dont really beat on it (I shift at about 3000rpm)