The standard stuff will be fine I'm sure but personally I'm not 100% sold that the same oil yer nana in her little 1.2 polo that never breaks 70mph, 4000rpm or 80 degrees C oil temps is optimal for a 360+ bhp S3 that gets driven hard, for extended periods & regularly taken to the redline.
In my opinion any stage tuned S3 driven with any anger I'd be (and am) running something that offers a little more protection at the hot end. Millers Competition CFS 5w40 in my S3 at the moment, Fuchs Pro-S 5w40 equally on par or if you like the tech then Millers CFS Nanodrive 5w40 NT, all Ester Synthetic oils, and both Millers/Fuchs make about the best oils available.
I'm running a 6-7k oil change schedule too, which as mentioned above is actually probably the more important part.
I spoke to opie oils and I ended up buying the Fuchs 5w 40 stuff pro s I think if you buy 5 litres you get free litre of offer is still there, car goes into garage next week to get serviced í ½í¸ this is the email very helpful - I would use a 5w-40 synthetic and you will find those through the link below.
Out of those, the best ones are the Fuchs/Silkolene Pro S, Millers CFS/CFS NT, Motul 300V, Red Line and Gulf Competition. The Motul 8100 X-Cess, Millers XF Longlife, Fuchs GT1 XTL/Supersyn, Gulf Formula G, Shell Helix and Mobil Super 3000 are good, cheaper alternatives.
VW SPEC 504.00/507.00 is long life oil, it's designed to run extended service intervals up to 2 years and 20,000 miles.
Just because an oil does not meet 504.00/507.00 does not mean that it's not as good (or better) for your engine, it's just not up to the extended long life service intervals.
If you want to run up to 2 years and 20,000 miles between services then on yourself, most tuners & oil experts would tell you that long life servicing is not a good thing for a performance engine, ok maybe for a pure motorway cruncher but not a 300+ bhp performance engine regularly driven hard and running increased oil temperatures.
If you look on the Fuchs oil finder you will see that 5w40 is a recommended grade oil too, it offers more protection at increased running temps over 5w30, both offer the same cold start protection.
It's just my opinion but I stand by what I say, a tuned S3 producing upwards of 100+ bhp over standard, driven hard and regularly taken to redline will see far increased oil temps over standard, I'd suggest you really want to be picking more suitable oil and change it more regularly, the Millers and Fuchs Ester Synthetic Motorsport range being some of the best available.
It's not even like it's expensive, £50 twice a year for the life blood of your engine?
Luckily for us Audi suggested we went along to a place in Aberdeen called TPS as we needed to buy a cam follower. They sold several different brands of oil. The Castrol edge was only £22 for 4L compared to Halfrauds £48. Bargain!!