GAS MILEAGE ....

fklskv said
There are 3.7854 litres in a gallon.

3.78l in a gallon US.
4.55l in a gallon Imp(Canadian)
US gallons have 128 oz,
Imp has 160oz
An ounce is an ounce between them

In grade-school, we learned the rhyme; "an ounce is an ounce the world around". I have no idea if that is true, cuz grade school was full of lies.