I would not recommend car oil for a bike. There are people who have tried this and found all sorts of problems. If you want to read about their experiences and a very good thread on this subject, it's on the Firestorm forum.
This is a great thread with loads of input and experiences. It's worth a good look.
Click here:
www.vtr1000.org then click on "VTR discussion board" at the bottom left hand side of the screen, then click on "workshop", then look for the thread that is a poll titled: [poll]: Is oil, oil?
