I know of no-one that fills their car with either gallons or litres.I am British and when I buy petrol I'm generally conscious of the amount. Can't guage it very precisely because of the flow rate at the pumps. I might tank up now and then if I'm going on a long journey, but this putting 'ten quids worth' in doesn't seem sensible to me, it doesn't mean a thing. After all if you are refueling you wan't to make sure you've enough to be going on with, unless you find stopping at filling stations geat fun. The rate of consumption of my car tends to remain the same but the amount you get for 'ten quid' doesn't.
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?
I don't know how typical that is but I doubt I'm that rare in my thinking. Buying by cash was probably more common back in the days before plastic when people were trying to run a car on what they had in their wallet at the time.
