94 Octane in plain 06 impreza wagon?

As many of you are aware Sunoco bought Petro Canada.

Some of the Petro Canada stations now carry 94 octane.

I have been fueling at south Kingsway near the Queensway for toronto people.

I have run 3 tankfulls of the stuff through my subaru and I have good things to say!

I have achieved a 10 percent improvment in fuel economy and I am regularly going 11 KM for every litre I put in. I realize that with this extremely warm weather cars tend to produce less power but get improved fuel economy in return.

So I will have to see how it pans out in the colder months.

I can definitely see that the engine runs quieter and smoother, better torque.

I know it isn't necessary or even recommended but why not do it? After all improved fuel economy smoother performance seem to at least partially justify the extra cost.