My average for the last 4 tanks before premium is 7.7 L/100 Km (mostly Petro-Canada).
Last tank using premium (Ultramar)returned 6.87 L/100 Km. A 10.8% gain! I know, I was skeptical too and had never used premium gas in any of my vehicles before (Sonata rated at 9.6 city/6.3 highway and requires regular).
I'm impressed as this was not a one day trip to show a "ringer" performance but for commuting to work and general driving around Montreal for 10 days. My commute is 18-22 Km depending on the time of the day. I had some highway thrown in there but also hilly secondary roads ending in a very slow, hilly and rough dirt road before I filled up last night. I use AC anytime it's hot enough because I don't like driving with windows down.
The ethanol in regular gas pushed me into giving premium a try and see if I would observe a change. Now, is the gain mostly due to premium gas burning better, more BTU/Liter, octane, better additives, etc. or to the fact that it contains no ethanol and regular contains up to 10%?
I'm a careful and mostly smooth driver and have been monitoring my mileage for ever. My little experiment is not a very scientific one, but for me now, if premium is less than 10% more expensive than regular (easy on thursday's at Ultramar), I'll use it and still be ahead. Unless they start to pack it up with ethanol too!
Of course, YMMV...
Last tank using premium (Ultramar)returned 6.87 L/100 Km. A 10.8% gain! I know, I was skeptical too and had never used premium gas in any of my vehicles before (Sonata rated at 9.6 city/6.3 highway and requires regular).
I'm impressed as this was not a one day trip to show a "ringer" performance but for commuting to work and general driving around Montreal for 10 days. My commute is 18-22 Km depending on the time of the day. I had some highway thrown in there but also hilly secondary roads ending in a very slow, hilly and rough dirt road before I filled up last night. I use AC anytime it's hot enough because I don't like driving with windows down.
The ethanol in regular gas pushed me into giving premium a try and see if I would observe a change. Now, is the gain mostly due to premium gas burning better, more BTU/Liter, octane, better additives, etc. or to the fact that it contains no ethanol and regular contains up to 10%?
I'm a careful and mostly smooth driver and have been monitoring my mileage for ever. My little experiment is not a very scientific one, but for me now, if premium is less than 10% more expensive than regular (easy on thursday's at Ultramar), I'll use it and still be ahead. Unless they start to pack it up with ethanol too!
Of course, YMMV...