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

[AL8001 at aol.com]

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