sorry for the late reply just returned from northern ireland ,i have used tesco 99octane in my 944s2 and continue to use it in my 2.5 boxster,it is much better than standard un-leaded you can feel the difference.
while i was working in ulster last week i found a road which would be a nice drive for a porsche its called the sperin mountains this is a road between belfast and strabane think of the biggest rollercoaster you have be on or seen then multiply by 27 miles beware of sheep,cows and the odd horse in the road,unfortunately i had to do the journey in a hired peugeot 207 1.4ltr sewing machine it was a nightmare 2nd and third gear only in a lot of places.
have any of our members been on this road?
it was good to get back into the boxster and take her for a drive on friday evening with the hood down,no cows,sheep or horses to worry about.