Originally Posted by christer
I use the Motul 5-50W which is superior to the Mobil 1 as far as I understand. Litchfield Imports offer the Motul option over the Mobil 1 if you want it whilst servicing. There may be better oils for racing etc. out there, but my understanding is that this is a very good oil indeed. Others will probably chime in.
I am testing shell helix racing 10w60 sm spec at the moment.
drives ok and feels more responsive than the OEM oil.