I did my first change just at 1200 miles to Penzoil Ultra and a Purolator PL14610 PureONE filter. This will be the routine every 5,000 miles starting when I get to 5,000 on the odometer. (I am just under 2,500 now.) As a plus, the same filter will work on my Altima, so I ordered half a dozen for now. I may even switch the Altima from Mobil 1 to the Penzoil too, just to keep it simple. I guess the cost of ownership, at least for oil changes, will be the same for the Z as my Altima.
