I use the Castrol Synthetic R 5w-30, will be switching to the Castrol EDGE 5w-30. Its the best oil i can get off the shelf in Broome, and i got my last bottle of synthetic R for $65. I recommend the Synthetic R, and the EDGE is supposed to be better.
Its a daily driver, just cruising no thrashing, done about 130,000 kms. Engine is in fine running order, going to be interesting when i open it up for a rebuild in another 15,000kms.
cheers
Evil