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Date:         Sat, 26 May 2007 03:58:17 -0700
Reply-To:     Anthony Egeln <regnsuzanne@YAHOO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Anthony Egeln <regnsuzanne@YAHOO.COM>
Subject:      Re: Octane smoctane
Comments: To: jdd <johndillon@SYMPATICO.CA>
In-Reply-To:  <01ce01c79f4c$0f9e4530$3f6ed1d8@480037D956F7448>
Content-Type: text/plain; charset=iso-8859-1

I can't explain it, but I also get better fuel economy with the 87 versus the 89 and 91 in my 2.1 wasserboxer....more is not always better. Anthony '89 Syncro GL (Hidalgo)

jdd <johndillon@SYMPATICO.CA> wrote: I've been keeping very good records of my gas usage over the years .. lately I'm been experimenting with 91 vs. 87 octane gas ... so ...

I traveled 743 kms on 86.556 liters of 91 oct ... and ... 770 kms on 92.827 liters of 87 oct ... this is an average over two fill-ups (I've averaged it over 3 and 5 and get pretty much the same numbers) .. I get 8.584 km/li, or 20.52 mpg U.S. or 24.24 mpg Imp on 91 oct and 8.245 km/li or 19.71 mpg U.S. or 23.29 mpg Imp on the 87 oct ... the problem as I see it is I did not control for speed ... I know that drive faster with 91 oct than with 87 .. and I generally drive fast in the 78 (120 to 130 km/h) and maybe 80% of my driving his hwy.

So ... I travel 0.339 km further per liter, or 0.81 mi further per U.S. gallon or 0.95 mi further per imp gallon ... on 91 oct vs. 87 oct .

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