guy's!!this is a very good topic and nissan should be aware of whats going on.and yes!i purchased my 370z last feb and yes ive seen this temp goes up almost to 250 and this worries me a lot.in the past whenever there's a new car coming out i usualy wait the next two year to make a purchase just like what happened to the 350z(camber problems),they corrected this problem after so many that purchased this car and made complaints .but when 370z came out i couldnt resist it and didnt wait so here i go with this problem.i hope this situation will be solve and nissan should do something bout this and treat this as a recall,its okay to make mistakes just do the right thing and correct it!!simple as that!! rather than consumer's like us that spent our hard earned money to purchased this remarkable creation swing the other way and buy maybe german car's..american made car's?hmmm that's a long shot..jk all im saying is we dont have to spend money to correct their mistakes.nissan has to be liable and thats the bottom line..