To make any sense of these numbers you now have to factor in the price
difference.

Are you getting one extra mile for 80-90 cents and is it worth it?

At local prices the regular unleaded is costing you only 25 cents a mile.  I
think.  Long day, not enough beer.   8)

On 5/25/07, 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 .
>

--
Jake
1984 Vanagon GL
1986 Westy Weekender "Dixie"
www.crescentbeachguitar.com