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From: jlw@ariel.UUCP
Newsgroups: net.auto
Subject: Re: Sources of Leaded gas
Message-ID: <584@ariel.UUCP>
Date: Wed, 21-Mar-84 08:54:29 EST
Article-I.D.: ariel.584
Posted: Wed Mar 21 08:54:29 1984
Date-Received: Thu, 22-Mar-84 01:30:52 EST
References: <327@tesla.UUCP>
Organization: AT&T-ISL, Holmdel, NJ
Lines: 40

There are several sources of leaded high octane gas:

1)  Racing fuel is still available in tests above 100 octane.
    Be sure to send the state and the fed their road use tax
    on the fuel because I'm sure that the fuel is certified for
    off road use only.

2)  Use avgas.  There are two problems:  First you are supposed
    to pay the road use tax.  That is the only thing illegal
    about using the stuff in a car legally allowed to run leaded
    gas.  Second the effect on your car of a gas coumpounded
    for high altitudes and cold weather is undetermined.

3)  Use high test unleaded in a mix of about 75%/25% with regular
    leaded gas.  This gives an octane rating greater than either
    of the primary ingrediants because the addition of lead to
    gas is a diminishing returns type thing.  But it won't
    get you up to 100 octane; only to about 95 or 96.

4)  Use an octane booster from a racing shop.  Warning tetra-ethyl
    lead is highly toxic!!!.

There are alternatives which require modification to the auto:

a)  Convert to propane which is what the importers of Morgans
    do.

b)  Lower the compression by use of a thick headgasket or dished
    pistons.

c)  Use some other kind preignition control such as water injection.



					Joseph L. Wood, III
					AT&T Information Systems
					Laboratories, Holmdel
					(201) 834-3759
					ariel!jlw