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Date:         Mon, 10 Apr 2006 08:00:19 -0400
Reply-To:     dhaynes@OPTONLINE.NET
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dennis Haynes <dhaynes@OPTONLINE.NET>
Subject:      Re: MPG
Comments: To: Niall Mac Caughey <nmacc@YAHOO.COM>
In-Reply-To:  <20060410102736.79944.qmail@web32810.mail.mud.yahoo.com>
Content-type: text/plain; charset=us-ascii

Those tires you have are too short. Your mileage figures for speed and distance are off by ~3% more than the error already there. Yes, speed makes a huge difference for fuel economy. Wind resistance is the major factor.

Dennis

----- Original Message ----- From: Niall Mac Caughey <nmacc@YAHOO.COM> Date: Monday, April 10, 2006 6:27 am Subject: MPG

> Hi folks, I'm a little late catching up on this thread. > > I've had my 86 2.1 Digijet Westy for about 18 months, but I've > only just gotten around to checking the mileage. It wasn't that I > overlooked it, more that I was afraid to find out how bad it > really is. The results were interesting. > > On normal day-to-day driving including short highway trips at 75 > or so, I got 21.4 mpg; that's full-fat Imperial gallons, not those > wimply lo-cal US ones. It would be about 17.1 to the US gallons. > I had to make a 220 mile trip on Friday over two-lane blacktop > with no highway mileage. For a change I planned in advance and > left myself plenty of time for both legs of the trip. > > Assuming that the brick-like aerodynamics of the Westy were a > large part of the problem, I kept it under 60 for most of the trip > and resisted the temptation to pass all the little old ladies and > farmers I encountered. > > I returned 28.1 mpg for the trip (22.5 US). What surprises me > is the improvement: 31% > > For the rubber fetishists I should point out that I'm running > 205/60x15 Fulda Carats fitted by the PO. > > Regards all, > > Niall >


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