[SUVord]

I do know that in the USA the octane number is calculated as RON+MON/2 while in Europe is just RON.
That means roughly that 91octane in the USA is the same as 95octane in Europe.
In general the European equivalent is adding 4 to the American value.
Australia and Canada:What octane calculations standards apply in your countries?
I know I could google for the answers but then I would lose one post and you shall stay in your lazy hibernation.
I'm always looking after you.

 

[stone]

I did a google search.
The ' Wikipedia ' site had this information:
Australia, " regular " unleaded fuel is 91 RON.

" premium " unleaded with 95 RON is widely available.
" 98 RON "fuel is also reasonably common.

 

[rehctelf]

Not sure how it compares but most stations here in Canada offer 87 as regular octane and premium as at least 93 octane.
At a little over a dollar a litre I tend to stick to the regular grade.

 

[molanojuan]

Not sure how is it calculated here in Colombia, however we have Regular 87 octanes and Premium 91.
Roughly 3.9 USD/gallon for regular, and 4.3USD/Gallon, not exactly cheap, even though we are an Oil producing country.

Our neighbor (Venezuela), has one of the cheapest gasolines in the world, however i prefer pay a little extra for my gas and not have Hugo Chavez as my president

 

[SUVord]

Pretty odd that there are no universal specs in the gasoline-octane content calculations although such specifications exist for diesel and all sorts of marine fuels.
So, from what I understand Canada, USA and Colombia use the same octane evaluation system,
while Australia uses Europe's.
As for the price, in Europe it varies from $6.30 to $7.20 per USgallon!!! :cuss: :cuss: :wall: