John and Josef,
There are two methods for measuring octane rating - motoring and
research. The average of the two is used in the US. The higher
research octane number is used in Europe.
Cheers,
Bob Haskell
AHCA 3000 MkI registrar
http://www.ciahc.org/registry_3000mk1.php
On 01/27/2017 01:59 AM, josef-eckert at t-online.de wrote:
> John,
>
> as far as I know 95 grade "European Octane" is comparable with 91 grade
> "American Octane". Don?t know the reason for that, as I never went into
> it further. I.E. Afgas for plane engines is about 103 Octane Europe.
>
> Josef Eckert
>
> K?nigswinter/Germany
>
> -----Original-Nachricht-----
>
> Betreff: RE: [Healeys] Ethanol
>
> Datum: 2017-01-27T07:54:53+0100
>
> Von: "John Spaur" <jmsdarch at sbcglobal.net>
>
> An: "josef-eckert at t-online.de" <josef-eckert at t-online.de>, "'Oudesluys'"
> <coudesluijs at chello.nl>, "'Healeys, Forum'" <Healeys at autox.team.net>
>
> Wish I could get 93 octane let alone 95 or 98!
>
> John
>
> San Jose, CA
>
> *From:*Healeys [mailto:healeys-bounces at autox.team.net] *On Behalf Of
> *josef-eckert at t-online.de
> *Sent:* Thursday, January 26, 2017 10:07 PM
> *To:* Oudesluys <coudesluijs at chello.nl>; Healeys, Forum
> <Healeys at autox.team.net>
> *Subject:* Re: [Healeys] Ethanol
>
> ?I have many friends who use E10 (95 Octane) in their classic cars
> without any problems. My Austin-Healeys need 98+ Octane,?
>
> Josef Eckert
>
> K?nigswinter/Germany
>
> ?
>
>
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