Just picked up a 2012 Hyundai Sonata Limited with the 2.4 GDI engine. It has 18,255 miles on it. We live in south central Montana, elevation is 3600 Ft. Often drive over the Beartooth Pass at 10,947 and cruise Yellowstone Nat. Park. The Owners' manual recommends a 5W-20, 5w30 (API SM / ILSAC GF4).Service manual recommends changing oil at 3750 mi. in severe usage, and 7500 mi. under normal use. My better half drives this vehicle about 40 miles a day, 5 days a week to work round trip, hops on the interstate here and off at work. 3 to 5 trips a month to the big town, round trip about 100 miles. We both drive somewhat consevatively We bought this car to maximize fuel economy, so I am wondering if a synthetic would be a good choice? It doesn't really matter to me, whether synthetic and conventional. Just what would be a good/great choice.
Regards, Rick
Regards, Rick