On 8/23/2012 2:55 PM, Mark A Kippert wrote:

> I have to say I'm a bit confused. I run a higher octane in my '87GL
> because to label next to the filler says (in several languages) to
> use a min. octane of 91. That would be premium, at least here in
> Indiana.

91 RON, which is how they rate octane in most of the world. The US and
Canada use a different system, AKI (aka R=M/2). 91 RON ~= 87 AKI, or
just regular gas.

http://en.wikipedia.org/wiki/Octane_rating#Examples_of_octane_ratings

> Have I been wasting my money?

Sorry, yes.