<VV> Higher Octane Fuel

Les corvair at mts.net
Sun Jul 9 19:25:00 EDT 2006

No idea what the legalities are in all the areas of the world where 
VVers live, I was answering a technical question.

In Canada, you're paying a ton of tax on fuel whether it's road or 
aviation. Can't tell you whether it's more for road or AV, but it all 
goes to the government's general revenue.

I know you can't use purple (farm) gas in your non-farm vehicle. I 
wonder if you can use it in an airplane? What if you're using the plane 
to spray your field?


BobHelt at aol.com wrote:

> In a message dated 7/9/2006 3:08:27 PM US Mountain Standard Time, 
> corvair at mts.net writes:
>     Actually, 100LL Avgas has *fewer* additives than car gas - oil
>     companies are restricted on what can be added to avgas by FAA
>     regulation - so no ethanol, MTBE, etc. will be found, just good
>     'ole tetraethyl lead. 100LL is just 'low lead' compared to higher
>     octane avgas that used to be available (like 130 etc.) but still
>     contains more lead than premium leaded auto gas. Your valves will
>     love it but watch your spark plugs carefully and don't use it to
>     wash your hands (despite how nice it smells compared to modern fuels).
>     Also, vapour pressure (volatility) of avgas is much lower than
>     auto gas (wouldn't want your Cessna to vapour lock at 18,000 feet)
>     so you may have starting problems in cold weather.
>     Make sure your avgas is light blue (colour coded 100LL) instead of
>     red (coloured 80/87).
>     Les
> 'Scuse me, but isn't it illegal to use av gas on the roads and 
> highways without paying the necessary taxes? And is leaded gas legal 
> on the highways?
> Or are we suggesting it is OK to break the laws now?
> Just wondering.....
> Regards,
> Bob Helt
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