Sorry guys,
bit of research on my part - both Vortex and Ultimate are 98 RON.....she asks for premium unleaded on the fuel door so thats what she gets - oh and although she is a company car we get the option to buy her after 2 years ($24,000!!!!) so don't want to trash her.

If you get a chance to do a novated lease and you do +25,00K's, have a look.

The one I was more concerned about was the other noise, is anyone experiencing some noise from the engine - its not big ends or anything like that. I have never had a Petrol turbo car and I can hear a slight intermittent noise from her - it could be the wastegate or something more sinister, usualy at idle and up until 2,000rpm a slight sshh kind of noise!! then disapates away. Happens intermittently as well.....