Did you know that
during the hot summer months, you can actually lose fuel in
your gas tank because of evaporation? And not only that, when
you return to your vehicle you will use more gas to get the
vehicle's interior temperature down to a comfortable temperature?
Because of these reasons you should always try to park in
the shade rather than in the open sun.
Surprisingly, you
do lose gas from your gas tank on hot sunny days, even when
your gas cap is on securely.
If you cannot park
in the shade, you can use reflective sun shades on your front
windshield which will reduce the amount of heat your car's
interior absorbs.