The jet lighters will use up more fuel as the number of jets in the lighter increases. If you buy a jet lighter with 1 jet you will use X amount of fuel. If you get a 4 jet lighter it will consume the fuel four times faster than the single jet lighter. The fuel consumption increases when there are more jets. Each jet will use the same amount of fuel but the amount of fuel used will be multiplied by the number of jets. This will cause you to run out of fuel faster.