Yes. Imperial is a term used by old
hosers to refer to any unit of measure that differs from its american counterpart. It goes back to the days when Canada was considered a colony of the commonwealth of England. You may have also heard the term Imperial gallon which is larger than the US gallon (4.5 liters vs 3.78 liters to a us gal) To get even more anal, the proper hoser way to spell it is litre. You have to be careful when talking mpg numbers with a Canadian, because some
hoseheads still do their calculations based on the Imperial gallon, which makes them feel better because they think they are getting better mpg numbers.