US oil barrels
A US oil barrel, also known as a petroleum barrel, is a volume unit used in the oil and gas industry to measure crude oil or liquid petroleum gas (LPG). One US oil barrel is 42 US gallons or about 159 liters.
US gills
A US gill is a unit of volume in the United States used for measuring liquids. One US gill is 1/4 of a US pint or 118.294 milliliters.