Well, it has already almost returned to normal! But assume rad fuid IS able to cool engine better (better flow). The water pump takes less beatings!, more power/better fuel economy! I hope this is true. I will post if I get better mileage or not. Probably wait until next tank! I raced a focus on HWY#17! Not the best for gas mileage! I really don't care as much about engine temp as I do about lubricating the water pump and thermistat and preventing thermistat from sticking!
