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From: toma@tekchips.UUCP
Newsgroups: net.auto
Subject: Re: Octane ratings, 1973 vs 1984
Message-ID: <866@tekchips.UUCP>
Date: Fri, 15-Jun-84 10:18:28 EDT
Article-I.D.: tekchips.866
Posted: Fri Jun 15 10:18:28 1984
Date-Received: Fri, 22-Jun-84 03:28:05 EDT
References: <1193@qubix.UUCP>
Organization: Tektronix, Beaverton OR
Lines: 8

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Subtract 4 from the old Research Method octane numbers to get current
values.  This means old Premium gas would be about 96 and old Regular
would be about 90.  Lower octane fuel does have more potential energy
per unit volume.  I am sure that if it were not for the push to get rid
of leaded gas (the cheap way to raise octane) all the cars today would
require premium because smaller engines could be used to obtain the
same power with less fuel consumption.