For the past 2 years or more, Ive ran my VZ Alloytec on 98octane. For the past 2 months Ive avg 9.7L to 9.8L per 100km weekely, driving every where. Its rare to see my avg go past anymore then 10.4L per 100km. When ever i try 95 octane, my car seams to smell warm and avg drops of a little bit.