Petrol engines - what is your octane experience?

[Guardian]

What octane fuel are you burning and have you noticed a difference in performance between 87 and 91 and 93?

 

[Logsplitter]

What octane fuel are you burning and have you noticed a difference in performance between 87 and 91 and 93?

I use 95 octane in U.K. and on travels in Africa. Occasionally I’ve put 93 octane when nothing else available. Can’t say I noticed any real difference as driving conditions and terrain were so variable
I think our 95 octane is equivalent to USA 91 octane. Not sure what standard you use in Canada.

 

[Lollo050968]

I use 95 E5, 95 E10 and 100, at the end of the day I had the impression with 100 Oktan, the car has the lowest consumption…..Until last 600km wit 95 E10, 1.3/100km less than with 100 Oktan on a similar route… So no idea anymore, E10 95 Oktan is the cheapest, in the future 5x fill up cheap , 1x100 Oktan for good feeling.