I stumbled on the old thread referenced: http://community.cartalk.com/discussion/2136017/is-syntetic-oil-recommended-with-a-subaru-outback
Anyway, my new 2015 Forester XT had a blurb in it that said all Subarus are now recommended to have synthetic oil for MY 2000 and up. Here is a quote from a dealer website: “All 2011 and newer Subaru Foresters, 2012 and newer Subaru Imprezas, 2013 and newer Outbacks and Legacys, 2013 Crosstreks, 2013 BRZs and all turbos are REQUIRED to use synthetic oil.” Here is the dealer’s website: http://www.subaruofkeene.com/synthetic-oil.htm
Thought I should share since the conclusion of the last thread was that it was unnecessary. True that the Owner’s manual did not specify Synthetic when the cars were new but the factory has changed their mind as to it’s advisability.