Octane question

[marshan162]

When people mention an octane rating in the US, say 93 is that a MON or RON rating. And is 93 what you call standard pump gas

Karl

[Rickracer]

And it is considered premium pump fuel. Also available are 87 and 89 octane. 87 is normally called regular, 89 is unleaded plus, 93 is premium.

[marshan162]

In the UK our standard unleaded is 95 RON and I think about 87 MON so that would equal your 91.

Thanks
Karl

[78Vector]

In the U.K. what is the RON and MON for your premium ? (if regular is 87MON/95RON (91 pump) ?)

[Markus]

Usually, the highest RON rated gasoline you can get in Europe is 98, equivalent to (R+M)/2 93.

To learn more about gasoline, read the gasoline faq. You can find a link to it on my links page (see below this post)