2015 Forester Limited
I buy costco almost exclusively. But i also see it has ethanol - is that ok? BTW, didn't get any notice of people's replies, sorry for the late acknowledgement!!! and thx!@ges74 If your 2015 is a non-turbo you do not have GDI/direct injection engine. Fuel will clean the intake valves on port injection engines especially if you use a Top Tier brand of gasoline such as Chevron, Shell, Costco, QT. So if you don't have a turbo the best thing you can do to prevent carbon buildup is to fuel up with a Top Tier brand.