Just wondered if US octane numbers use the same system as UK? Pump gas (petrol as far as I'm concerned
) seems to be around 91 octane in US IIRC, whereas standard in UK is 95, with super being up to 99 depending on brand (total 97, BP 98, shell 99, tesco
99).
Assuming the numbering system is the same, and timing is altered to take full advantage, then US figures (providing supplier ishonest) should be a conservative estimate of power when used in UK even on std petrol?
Are there any issues (can't think of any) using higher octane fuel e.g. 99 rather than 91?
Thanks
Jono


Assuming the numbering system is the same, and timing is altered to take full advantage, then US figures (providing supplier ishonest) should be a conservative estimate of power when used in UK even on std petrol?
Are there any issues (can't think of any) using higher octane fuel e.g. 99 rather than 91?
Thanks
Jono