There are different types of octane ratings, the most common in the US is
something like RON/MON. The Volks I believe used to just state a RON number
which  "IF"  I remember correctly is higher than the equivelant RON/MON. It
should be specified on the Gas Pump.

Go here for to the "fuel section" for all you want to know about Octane:

http://www.geocities.com/motorcity/lane/1970

Mark Ingalls

>From: Dan Landry <landry_skidd@HOTMAIL.COM>
>Reply-To: Dan Landry <landry_skidd@HOTMAIL.COM>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: petrol consumption
>Date: Tue, 5 Sep 2000 09:25:48 ADT
>
>There's a sticker beside my fuel cap than says minimum octane to put into
>the tank is 91.
>
>Danl
>
>Bedford, Nova Scotia
>
>
>----Original Message Follows----
>From: Bill Hayeslip <whayeslip@JUNO.COM>
>Reply-To: whayeslip@JUNO.COM
>To: vanagon@GERRY.VANAGON.COM
>Subject: petrol consumption
>Date: Mon, 4 Sep 2000 22:21:02 -0400
>
>In reading the discussions of the various mpg averages, I noticed that
>many of the vans are using a higher octane. Should the 2.1 engine be
>running on the higher octane or is it ok to run on the regular 87? And
>btw I'm getting 17.76 mpg local and 20.75 mpg highway.
>
>Bill H.
>88 GL
>Pgh.,Pa.
>
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