Change the oil as recommended in your owner's manual. If you have no manual then change it every 5,000 miles unless you drive mostly short trips. In that case change it every 4,000 miles.
The 2008 Infiniti G37 has a timing CHAIN Helpfull
330 hp
Motorweek - 1987 Infiniti G37 27-7 was released on: USA: 19 October 2007
Yes, a convertible Infiniti G37 is announced and will be available on November 19th, 2008. It has a roof looks exactly like G37 Coupe.
Up to $35,050 or $56,750
Tochigi Prefecture, Japan (North of Tokyo)
y
no
Roadfly TV - 2005 2010 Infiniti G37 Convertible 5-60 was released on: USA: 2 September 2010
155 top speed..5.5 0-60
You can buy a stick shift. You don't have to though. For the coupe, to get stick shift you'd have to buy the 6speed G37 sport coupe which is the most expensive out of all the g37s.
It's electronically limited to 155 mph, but beyond that I don't know.