In the 24 Hours of Le Mans 2013 Audi used a 58 liter fuel tank as required by regulation on Diesel powered LMP 1 cars and Toyota was allowed to use a 73 liter fuel tank, in accordance to regulation on Petrol powered LMP 1 cars. Are these regulations the same for the total WEC 2013 or only for the 24 Hours of Le Mans 2013?