Hello!
Until recent I have filled my 4/4 Sport 2011 with Shell V Power (98-99 octane). The 2 last fillings I used 95 octane. I found the motor runs smother and the mileage does not seem to change.
The timing of the ignition seems to adapt to the lower octane grade and got at smother run at low revs.
What is your opinion on this matter?
//Bosse
4/4, Sport White (Ivory) 2011), Smart Roadster Coupé Yellow, 2003
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