Yes but an F250 does not use leaded gas like many planes do, has much more complete and efficient combustion, and likely produces far less particulate emissions.
Just curious, where in the wikipedia article does it say Private jets don't use leaded gas ?
Just searching the article for "lead" only gets this quote: "The possibility of environmental legislation banning the use of leaded avgas (fuel in spark-ignited internal combustion engine, which usually contains tetraethyllead (TEL), a toxic substance added to prevent engine knocking), and the lack of a replacement fuel with similar performance, has left aircraft designers and pilot's organizations searching for alternative engines for use in small aircraft."
Also a reference to "Planemakers challenged to find unleaded fuel option - The Wichita Eagle" a 2009 article which has a dead link.
Curious to me why you would cite an article that says the opposite of your assertion and then repeat the definitive statement. I must be missing something.
Jets don't use avgas (which is still available with lead), they use jet fuel.
The planes you are thinking of are mostly used for hobby flying or some short haul commercial flights, e.g. float planes. These have piston engines, more like your car ICE.
It's funny watching you all use different words and think they mean the same thing. Turbine powered aircraft, whether jet, fan or prop (a Citation is a turbofan powered aircraft) use Jet-A which is basically diesel (OK, OK, it's kerosene but they aren't that different). Piston planes (of which there are plenty) mostly use 100LL - high octane, leaded gasoline. Now that we're done with the pedantry, please continue with your argument.
