2013 Ford Escape 1.6L or 2.0L

“Either way, just make sure you feed it premium fuel and full synthetic oil and you’ll get long life out of it.”

Why premium fuel and full synthetic oil? The salesman told me the vehicle uses regular fuel (and yes I know some salesmen will tell you anything to get a sale). I didn’t ask about the oil. Does Ford require full synthetic oil for the turbo engines (I’ve never had a turbo before)? I haven’t checked the owners manual yet but I will do that before I buy the vehicle.