Re: AVGas versus Race gas

[John Erickson <hombre@elp.rr.com>]

I used to sell AV gas at an FBO.  The green stuff (they're all color-coded) 
is 100 octane unleaded. The purple stuff, if you can find it, is 130 octane 
leaded.  The red stuff is 80 octane leaded.

John
El Paso

At 10:24 AM 11/29/2001 -0600, Brian Wagner wrote:
>The key to this statement is the AV Gas is leaded fuel, so in car with 
>cats it is a no no. If the car is non cat then AV Gas can still be used, 
>tetra-ethyl lead in AV Gas is the same as what was in gasoline for you car 
>until the EPA stepped in. The lead is an inexpensive octane booster, 
>Racing gas is more refined which adds to it cost.
>
>Just rambling, I researched this once a long time ago.
>
>Brian
>
>
>87 16v
>86 8v (parts car)
>85 Wolfsburg (new parts car)
>
>
>
>>From: "Scott F. Williams" <sfwilliams@home.com>
>>To: "Scirocco List" <scirocco-l@scirocco.org>
>>Subject: AVGas versus Race gas
>>Date: Thu, 29 Nov 2001 11:04:19 -0500
>>
>>I figure that my fellow tech geeks may find this interesting:
>>
>>There is a debate going on the 323GTX list as to whether AVGas is a
>>reasonable substitute for high-octane automobile fuel. The usual "it worked
>>in my car, so there" opionions have trickled off and now somebody has come
>>forth with real technical information. So, here is a good (slightly edited)
>>snippet:
>>****************
>>
>>"Aircraft motors tend to be steady state machines, accellerating and
>>decellerating less frequently than automotive engines (More often than using
>>the throttle, you change the pitch of the prop on more modern aircraft.)
>>Anyway,
>>they need low reid vapor pressures to prevent fuel from vapor-locking at
>>high-altitudes and they need good octane to provide power over time with low
>>EGT's. AVGas uses lead-branched parrafins to achieve this.
>>
>>Racegas uses a blend of aromatic hydrocarbons to achive high octanes. This
>>prevents
>>knock and is very well suited to motors that must increase in RPM quickly.
>>______________________________
>>Scott F. Williams
>>Account Manager
>>GENUiTY - Eastern Region
>>100 Wall Street, 10th Floor
>>New York, NY 10005
>>*NEW* Voice: 646.576.8465
>>Cell: 917.648.2256
>>scott.williams@genuity.com
>>
>>
>>--
>>Email LIST problems to: scirocco-l-probs@scirocco.org.
>>To unsubscibe send "unsubscribe scirocco-l" in the message to 
>>majordomo@scirocco.org
>
>
>_________________________________________________________________
>Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
>
>
>--
>Email LIST problems to: scirocco-l-probs@scirocco.org.
>To unsubscibe send "unsubscribe scirocco-l" in the message to 
>majordomo@scirocco.org
>


--
Email LIST problems to: scirocco-l-probs@scirocco.org.
To unsubscibe send "unsubscribe scirocco-l" in the message to majordomo@scirocco.org