About the same here with my 1996 Hilux Surf V6 400 Km a tank. Use gas from Petro Canada --no ethanol
I don't care for the way they run the petro can here, so I use Ultramar. This year is my first year running super through the winter. In previous winters once they crank up the ethanol content for their "winter gas" I've seen mileage drop to 350/tank. At that rate, the super is worth the extra!