Hmmmm..... Looking through the site mentioned:

http://web.me.com/flyingkiw1/Classic...N_and_DII.html

So it's THAT critical??? I suppose not for sport flying, though.

And apparently there's "good kerosene" and "bad kerosene"...

http://web.me.com/flyingkiw1/Classic...ggestions.html

Not sure where to find "Jet A" around here. Don't have any pilot friends (at least, none who fly jets).

Iskandar