Just echoing all the above comments...it's not a huge concern. I live in Southern California, and with all the bumper to bumper traffic and hot summers, my car did fine. I recently added an oil cooler, but by no means was it a necessity (cheap way to ease your concerns ~ $500-850 depending on which one you get). At the end of the day, if you love everything else about the 370Z and this is your only concern - it's a no brainer. Get it and join the club
