Reading a number of the fuel reviews available online, and the comments in various forums, it seems that there are "some" opinions that certain high-octane fuels (possibly due to alcohol content levels) are more suitable for turbocharged petrol cars and others for normally-aspirated.
There's no clear evidence or even a consensus, but I detected a "leaning" towards Shell for N-A and Tesco for turbos.
Anyone have any thoughts or experiences?
As both our cars run better (and almost always) on 99 and we have one of each type I'm interested.
As it happens the N-A S8 usually gets fed Shell V-Power and the turbo Volvo usually gets Tesco Momentum, but it's not guaranteed.
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".  (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! 
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course.  (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850!
Last edited by HPsauce; 8th February 2017 at 07:46 AM.
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