Originally Posted by Dustin@Z1

CRWallace,
I appreciate your input on this, but keep in mind. The factory temp sensor that displays on the dash board is post-cooler. You are reading the oil cooler at its coolest temp where the oil re-enters the block. The oil is MUCH hotter once it cycles thru the engine and returns back out to the core.

I do agree with you and we have suggested this in the past to many of our customers and forum members here on the370z. Owners of Z/G's living in cooler climates or in the winter with ANY oil cooler should consider blocking off the front of the core during the cooler times of the year. This method is used widely by racing teams to further regulate oil temps.

Race teams will block off individual rows of the oil coolers during test and tune to "fine tune" oil temps depending on the track conditions, humidity and driving style.