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this post was submitted on 17 Aug 2023
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No, it’s not. Jet fuel does not have lead
Small propeller planes use leaded fuel
Actually , one of the proposed solutions to leaded fuel in propeller planes was to see if you could modify the engines to use jet fuel
Additionally, there are several unleaded alternatives in the works, one of which (GAMI 100UL) has been approved by the FAA for use in all avgas planes with the purchase of a Supplementary Type Certificate.
Some light aircraft, such as the Diamond DA40NG use automotive diesel engines adapted for aviation that burn jet fuel instead of avgas. The diesel version of the Diamond is about 40% more efficient than the avgas version, and also flies considerably faster.