How many litres does an oil barrel hold?
About 159. The barrel is one of several units of volume applied in various contexts; there are dry barrels, fluid barrels, oil barrels and so on. The volumes in common usage range from about 100 to 200 litres. In the worldwide oil industry, an oil barrel is defined as 42 US gallons, which is about 159 litres or 35 imperial gallons.