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Dual-fuel engines have been around since the 1920s. There are old Fairbanks-Morse dual-fuel engines dating back to World War II still running in the oil patch - where natural gas is often flared off. (Price = zero)
By using the diesel combustion event as a "blowtorch" to ignite a very lean natural gas mixture you can dispense with a throttle for power modulation.
Your can do the same thing with a very hot spark plug.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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