How to Remove Benzene From Gas

Fill the Toricelli vacuum with gasoline. Put on goggles and gloves. Place the Toricelli vacuum on its side. Close one end of the vacuum. Tip the vacuum on its end slightly. Pour gasoline through the funnel into the open end so that an equal amount of oil can also be poured into the vacuum while still leaving enough room for considerable air flow. Cap the open end of the vacuum.

Fill the Toricelli vacuum with crude oil. Tip the vacuum up slightly onto the recently closed end. Slowly open the cap at the end of the vacuum you closed first. Pour crude oil through the funnel into vacuum, so that the volume of gasoline and oil are the same. Leave considerable airflow. About half the volume of the vacuum should remain empty of liquid. Place the cap back on the vacuum.

Wash the gasoline. Keep the vacuum level, but move it around in an infinity shape with extreme gentleness and care. Do not turn the vacuum upside down. The gasoline and oil should swish through each other, eventually passing through each other at equal rates. The rate of passage or washing is important, because the vapor pressure of benzene from the gasoline will pass into the oil until the pressure rates are equal.

Watch the oil. The oil will separate into two forms of oil, the original crude oil used for washing and an obviously changed version that is less viscous. This is your sign that the benzene vapors have passed into the oil. The gasoline may become brighter, but not necessarily. The scent will be more powerful because of the vapor passage.