1. Nope, no platapus.
2. Sydney was used as a penal colony . The kicked the bad ones they couldn't handle out...up to Queensland, the sunshine state. Give Sydney a miss and come to Brisbane . We'll look after you. Seriously, It's a great place.
3. Senior anything's are bad.
4. I use Motul 3000 (Mineral) 20/50 but mine is still relatively new, 16,000ks.
I think the Mobil 1 without the friction modifers is the best choice, especially as the Bird run a little hot. Synthetic handles the heat better.