12 Pack Mazda Full Synthetic 0W-20 GF-5 with Moly Engine Oil - Premium Motor Oil for Mazda Vehicles, Enhanced Engine Protection & Performance, Ideal for Daily Driving & Extreme Weather Conditions

All dealers put any synthetic available 0W-20 but these are costly but have high amount of Moly. Engine of Mazda really benefits from this. I regularly hit 32 mpg in highway driving +40 miles no traffic. Different oil, same route gave me 28 mpg at the same time window of a given day. When changing them at 7500 miles I find they are still relatively okay. Yes - I only use OEM oil filters.