Castrol edge with syntec power full synthetic 5w20 runs quitter and smoother better
gas miles. than mobil 1 5w20 in my 2007 ford focus 2.0 dohc pzev, but mobil 1
runs great in my 2003 Hyundai accent 1.6 dohc engine.
ford focus 92000 miles
Hyundai accent 152000 miles