Re: fuel ratio
1/3 pint to a gallon is 24:1 ( US or UK)
That is 5.3 fluid ounces per US gallon or
6.7 fluid ounces per UK gallon ( at least it would be if the UK still used gallons pints and fluid ounces)
Anwhere in the world except the USA is 41.7mls ( call it 42ml, or even 40 ) per litre.
I know you are not in the UK because the fuel is called petrol, not gas, here.