UK gallons
A UK gallon is a unit of volume used in the United Kingdom for measuring liquids such as fuel and water. One UK gallon is about to 4.54609 liters or 0.16054 cubic feet making it substantially larger than the US gallon.
Cubic Centimeters
Cubic centimeters (cm³) are units of volume in the metric system equivelent to a milliliter. A cubic centimeter is a unit of volume equal to the volume of a cube with sides that are each 1 centimeter long. It is commonly used to measure small volumes, such as the volume of a liquid medication or the displacement of an engine. One cubic centimeter is equivalent to one milliliter in volume.