I've heard all this before from auto nuts, so somebody explain. What's the benefit?
For the record, I've never put anything but el cheapo unleaded in the Peuteot GTi, and never even looked at what brand it was. Like I said, 118,000 miles and 11 and a half years, and counting.
What benefits do you get from the pricier petrol (as if it wasn't dear enough!), and how does it work?
Rolfe.