Date: Tue, 16 Apr 2002 20:22:53 +0100
From: "David Haydon" <>
Subject: Re: Shell Optimax petrol (UK)?

I'm assuming that Optimax is 'super unleaded' (if not ignore me) I found that the price varies quite dramatically from between 5-15p more than regular unleaded. The most annoying part is that most garages do not advertise the price so you only find out how much you are being ripped off when you get to the pump. I use it intermittently in my Carlsson (220bhp - very similar to the early Aero) mostly when I am doing lots of high boost driving (those nice bendy A & B roads :o) because it allows the engine to maintain maximum boost without backing off due to knock that you can see with standard unleaded in the Carlsson/Aero/chipped turbo. Watch your boost gauge and you will see that with standard unleaded under hard acceleration, particularly in warm weather, it will hit max boost then almost immediately back off, with super it will maintain that max boost. I found virtually no difference in fuel consumption between the two. David "Jim" <jimnopsamil.thanks> wrote in message > I am told by Shell that the price relative to ordinary unleaded can vary if > the garage is not owned by Shell. So my local Shell garage (actually Deep > Mill near Gt Missenden) can charge what he wants, and clearly does. > > At 13p above normal unleaded I will not be using it, even though it seems to > suit my 9-5 Aero. > > What petrol do other Aero users use? > > > "Robin M Milford" <> wrote in message > > > Don't know about use, but as for price: Shell Southampton tonight, > ordinary > > 95 unleaded was 74.9p/litre, Optimax 79.9 - I had the ordinary in my 1991 > > 9000iS > > > > Jim <jimnopsamil.thanks> wrote in message > > > > > Does anyone have any comments on using Shell Optimax in Saab turbo > > engines? > > > > > > Also, what does it cost where you live, near Amersham it is selling at > > about > > > 85p which is 13p above ordinary 95 unleaded, yet in Somerset I have seen > > it > > > at "just" 5p more > > > > > > > > > > > >

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