Gasolene Octane Numbers

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Mar 18, 2002 | 06:49 AM

UKITR143

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From: wolverhampton, england, UK

Gasolene Octane Numbers

Greetings from across the Atlantic,

I noticed when comparing specifications for the Integra Type R that US models have a lower compression ratio than JDM and UK/Europe. I assume this is down to gasolene grades.

In the UK we have regular unleaded (95 octane) super unleaded (97 octance) but recently Shell bought out a fuel supposedly developed with Ferrari that it calls 'Optimax' (98.6 minimum octane). This is actually priced in between regUL and supUL and the B18C6 engine definitely performs better on it - owners handbook suggests 98octane minimum. In Japan I believe they use 100 octane fuel.

Can anyone outline what is recommended for the Acura Integra and what grades are readily available in the US.

Cheers
Steve

Mar 18, 2002 | 07:27 AM

90civichbsi

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From: Austin, TX

Re: Gasolene Octane Numbers (UKITR143)

we have anywhere from 87 to 93 octane in texas

Mar 18, 2002 | 07:58 AM

EP3_05

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Joined: Mar 2001

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From: West Chester, PA, USA

Re: Gasolene Octane Numbers (UKITR143)

The highest I can get in Pennsylvania is 94 from Sunoco. Of course I could go to a track and get some higher octane race fuel, but that is impractical.

My b16 does pretty well on 93 and 94 but I don't think I really want to try anything lower.