then Ireland has been more metric than the UK for years.
Did you check out the family butchers/grocers etc?
We averaged 36 mpg." I wonder at what pump they got their gallons of fuel!
I know of no-one that fills their car with either gallons or litres.
They fill up, or top up their tanks.
Or they put in "moneys worth" - eg 20 quid, 40 quid etc.
Gone are the days (if they existed) when you stopped, stayed in your car, and said "put 5 gallons in" - and even then I'd wager a bet they'd hand over a ten pound note and said "put that much in".
Seriously! Think about it! When did you last look at the deleivered gallons or litres to get a whole number? Would you put in 10 litres and hand over eight pounds and thirty nine pence?
Or put in ten pounds worth?
