1999 Mercury Sable Owner Guide 1st Printing - Page 163

Maintenance and care The advertised fuel capacity of the fuel tank on your vehicle is equal to the rated refill capacity of the fuel tank as listed in the Refill Capacities chart in this "Owner Guide." The advertised capacity is the amount of the Indicated Capacity and the Empty Reserve combined. Indicated Capacity is the difference in the amount of fuel in a full tank and a tank when the fuel gauge indicates empty. Empty Reserve is the small amount of usable fuel remaining in the fuel tank after the fuel gauge indicates empty. The amount of Empty Reserve varies and should not be relied upon to increase driving range. When refueling your vehicle after the fuel gauge indicates empty, you might not be able to refuel the full amount of the advertised capacity of the fuel tank due to the empty reserve still present in the tank. Filling the tank For consistent results: • Use the same filling rate setting (low - medium - high) each time the tank is filled. • Allow three automatic click-offs when filling. • Always use the recommended octane rating of a known quality gasoline, preferably a national brand. • Use the same side of the same pump and have the vehicle facing the same direction each time you fill up. • Have the vehicle loading and distribution the same every time. Your results will be most accurate if your filling method is consistent. Calculating fuel economy 1. Fill the fuel tank completely and record the initial odometer reading. 163