"David Lesher" wrote in message
...
B A R R Y writes:

Ken Finney wrote:

I already am, but there an STC for diesels in 172s.


Running on Jet-A, not Biodiesel.

Which is just kerosene...

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There are really three of issues (that I can recall) he
1) A diesel will run on any hydrocarbon fuel that it can pump and meter.
2) Different seals and hoses are compatible with different
chemicals--although it would be no surprise to find that all were compatible
with biodiesel.
3) Certified aircraft/engines require fuels authorized in the type
certificate and/or an STC.