Originally Posted by WarmAndSCSI

Not sure if you all have them available there, but 2 off-the-shelf oils will serve you well:

Castrol Syntec 0W-30 (make sure it's the European car formula and made in Germany)
Mobil 1 0W-40

Both of these oils have superior HTHS (High Temperature High Shear) ratings to other "synthetics" and will work well for a track day.

Honestly, I would drain and fill the oil (you can retain the filter) soon after your track day event.

If you have a Red Line dealer, I would opt for Red Line 5W-30 or 10W-30. It's the bomb (WAY better than RP), but pricey.