Quote:
Originally Posted by aussiesteve
The US gallon is smaller than the imperial gallon,hence the difference
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Found this to further complicate matters. (Slow day at work).
There are 55 gallons in a drum and 42 gallons (1 U.S. gallon = 3.78541178 liters) in a barrel (i.e., 1 barrel = 158.9872948 liters).
Originally there were 40 gallons to a barrel. However, that was changed in the mid-19th century to give a little extra so consumers wouldn't feel "cheated."
A little over 23 gallons of gasoline can be refined from a barrel of oil. Other products (jet fuel, lubricants, etc.) make up the rest.
The easy way to remember the number of gallons in a barrel of oil: There are 7 letters in gallons and 6 letters in barrel. 7X6=42 gallons.
42 US gallons.