Low oil pressure makes me nervous

Id try a 10W40 on the way home, see what the mileage comes up to. 60W is tough on the pump and youll probably pick up a few MPG on the way home. 60W is what it is when hot and since you dont live in a freezing environment, you probably dont need the ultra thin 'start up' 0W. I believe the newer cars use the ultra low weights for start up emissions and can due to tighter manufacturing processes.