Date: Tue, 15 Oct 2002 18:40:31 GMT From: Paul Halliday <pjghnopsamyonder.co.uk> Subject: Re: Shell Optimax fuel and UK SAABs
in article 3DAC4B36.1EFF4B7nopsamanytime.co.uk, Johannes H Andersen at johsnopsamanytime.co.uk wrote on 15/10/2002 18:07: > > > Derek Wright wrote: >> >> Any thoughts on the benefits, damage etc of using this fuel which has >> a RON of 98 - it is claimed to make the engines more efficient - ie >> better acceleration or greater economy >> -- > > Try it. I've now used two tankful in my 1993 9k CSE 2.0 LPT and I quite > like it. My thoughts can only be subjective, but I think there is less > hesitation than before when accelerating flat out, it seems to get away > cleanly up to the speed limit. Only problem is finding Shell stations. Hmmm ... I've tried Optimax in my 1988,1985 and 1989 C900s - the first couple of tanks were okay, but the turbos just loved going back to Super after that. Spool up was less responsive and top boost was unobtainable until I had a couple of tanks of normal (Texaco, in my case) Super through them after the Optimax. My injection model (1985) is best with unleaded (95 RON) and a shot of Redex every 3000 miles. It just hates Optimax (and Super, for that matter). The moral - it's okay, but not after a few tanks for the classics ... new(er) models? Maybe ... My 1998 Fiat Punto GT (turbo) *&*&*&*loved*&*&*&* Optimax and hated any other Super. My friend's Fiat Coupe (20V turbo) also loved Optimax. Modern engines ... ? Fiats? Ferraris? Cheers, Paul 1985 900i 16V 1989 900 Turbo S http://pjgh.go.dyndns.org/saab/index.html
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