Av gas doens't burn hotter unless you crank up the ignition timing b/c it has a higher octane. It does have a lot of extra chemical crap in it required for anti-icing, crash etc... If it's not free, you should re-think going back to pump gas.

it burns a hell of alot hotter! it has lead for higher octane
my car pings on 91, so i could either put 95 or 98 in OR a mix of 91 and avgas, which is what i do

and it doesnt have any chemicals for anti icing and what do you mean by crash? as in if the aircraft crashes???

it got Lead (TEL) a chemical for turning the lead into something else after its burnt, and a chemical that removes that chemical, or something like that, sorry for being so vague on those, lol

oh and yes its free

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'85 190, unrego'd (prospect track car)
'87 190e, manual (kinda rare in australia)
'89 260e