Noun
a British imperial capacity measure (liquid or dry) equal to 4 quarts or 4.545 liters
Source: WordNetE.L.) for every one imperial gallon of 100 octane fuel (or 1.43 cc/L or 0.18 U.S. fl oz/U. Source: Internet
The imperial gallon, quart, pint, cup and gill are approximately 20% larger than their US counterparts and are therefore not interchangeable. Source: Internet
In the United Kingdom fuel efficiency is officially recorded in miles per imperial gallon although fuel is sold in litres. Source: Internet