Subaru specs 5.1 qts for an engine oil and filter change; see 2014 OM page 12-4. Subaru strongly recommends 0W-20 API SM or SN / ILSAC GF-4 or GF-5 synthetic engine oil for your car's non-turbo FB25 engine; Mobil 1 0W-20 AFE oil qualifies.I have a 2014 Forester non turbo. How much oil is required for an oil and filter change? Mobil 1 OK?