Av gas(was: DFI, Batch Fire, and other myths)

[Clarence L.Snyder]

AL8001 at aol.com wrote:
> 
> In a message dated 99-01-21 17:25:56 EST, shannen at grolen.com writes:
> 
> >Lessee... Av gas was missing something, maybe detergents or the added
> >lubricants that are in auto gas?  Can't remember.  Is there any truth
> >to the story that unleaded av-gas is more correctly called low lead?
> >Shannen
> >
> >
> >
> 
> I've never run unleaded av gas and don't know if it exists. The small airports
> I've been to only have 100LL or "Jet A".   I do run 100LL (100 octane Low
> Lead, blue color) in a
> Formula Ford (1.6 carbed engine, looks like a Indy car only smaller) and a
> porsche 914.
> 
> The fuel is really low lead, the plugs come out nearly white, the exhaust only
> has a slight coating of lead.  Much better than the VP fuels C-15 green(
> contains the maxium legal limit of 4.25 Grams per gallon- I think the number
> is correct) I used to run, the plugs would be covered with lead.  Also if you
> ran the engine too cold the plugs would look gray.
> 
> Last year 100LL was $ 1.25 US gal.  Two years ago VP C-15 was $ 4.50!
> Airports will sell av gas to regular people, just don't ask them to pump it
> into a car( bring a can) and please don't dump the can into the car while you
> are there.
> 
> Av gas dosn't have a road use tax ( ~ .43 gal in PA) attached to it, so it's
> illegal for a street car.  I've mixed 50/50 100LL and mid grade unleaded
> street gas with good results.
> 
> Harold in PA
In Canada it's illegal to put anywhere but into a plane - can't even buy
it to use in a race-car. I used to use it for engine storage - fill the
tank with av-gas and it's as fresh a year later as pump gas would be 3
days later. It does NOT absorb water as much as mogas.