[DeTomaso] Fwd: Av fuel vs race gas

[jgkrenton at comcast.net]

Yes!  Never use leaded fuel in a car with a Cat... 



Jeff/2467 



----- Original Message -----


From: "Sean Korb" <spkorb at gmail.com> 
To: "List Pantera" <detomaso at realbig.com> 
Sent: Thursday, April 12, 2012 7:04:57 PM 
Subject: Re: [DeTomaso] Fwd: Av fuel vs race gas 

Don't use aviation fuel in any car with a catalytic converter.  It 
*will* destroy the converter.  And for sure, on a pre 1975 car don't 
tell the feds or state officials you are doing it or planning it or 
have done it.  They want their tax money.  Other than that, let's go 
racin'! 

A friend of mine was brewing her own corn-oil based fuel and had 
graphics all over her truck saying so.  A DMV cop at a rest area had 
all that shut down in a hurry. 

sean 

On Thu, Apr 12, 2012 at 9:58 PM,  <jgkrenton at comcast.net> wrote: 
> 
> 
> 
> 
> Jerry: 
> 
> 
> 
> I can't address the issue of the lead vs synthetic oil, but as someone that grew up in airplanes and cars (turbo's in both) the basic difference between "basic" Auto fuel (I don't want to discuss California fuel) is what is called the Reed Vapor Pressure.  Essentially Av-gas has a much higher boiling temperature than car-gas.  This prevents vapor-lock, fuel boiling in your fuel lines or carburetor, at altitude., Your engine suddenly quitting is much worse in an airplane than when your car quits at a stop light on a hot day.   Of course the addition of Alcohol  to car-gas made the situation much worse for cars.  Additional fuel pressure, such as most Fuel Injected Engines have, is a method to prevent fuel boiling... 
> 
> 
> 
> The other thing is Av-Gas has more stabilizers in it so it stores better than car-gas. (airplanes tend to sit a lot...) 
> 
> 
> 
> I've been running Av-Gas in cars for years, when the octane demands justified it, (it's expensive!) without problems. 
> 
> 
> Of course, your results may vary! 
> 
> 
> 
> Good luck! 
> 
> 
> 
> Jeff/2467 
> 
> 
> ----- Forwarded Message ----- 
> 
> 
> 
> 
> From: "Jerry R Knotts" <knottsj at galstar.com> 
> To: detomaso at realbig.com 
> Sent: Thursday, April 12, 2012 3:11:18 PM 
> Subject: [DeTomaso] Av fuel vs race gas 
> 
> Collective, 
> 
> All my life I have heard that aviation fuel has additives that make it 
> unsuitable for automotive use.  Is it only that you carb won't ice at 20,000 
> ft or is there more to it than that.  I have been told that you should add 1 
> oz of Marvel Mystery Oil to each gallon of aviation gas that you use.  I 
> have also been told to mix it 1/2 and 1/2 with regular unleaded 91 oct. 
> With aviation gas at $5.00 and race fuel at $10.00 it makes a difference to 
> me for a higher compression engine. 
> 
> Thanks in advance to the collective, 
> jerry 
> 
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-- 
Sean Korb spkorb at spkorb.org http://www.spkorb.org 
'65,'68 Mustangs,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382 
"The more you drive, the less intelligent you get" --Miller 
"Computers are useless.  They can only give you answers." -P. Picasso 
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