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Re: Shell V-Power

To: "Gosling, Richard" <>, <>
Subject: Re: Shell V-Power
From: "Paul Hunt" <>
Date: Mon, 28 Aug 2006 09:56:07 +0100
UK uses RON (Research Octane Number), there is also MON (Motor Octane
Number), and America uses (RON+MON)/2 which is known as PON (Pump Octane
Number).  99 RON is 90.75 MON or 94.9 PON.

See and


----- Original Message ----- 
> The definition of octane levels is different in the UK to the US, but
> I'm not sure exactly what the difference is or which method gives the
> higher numbers.  But our 98 or 99 octane may not be quite so much higher
> than your 91 or 93 premium as it looks like.

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