What's the INFINITI M37 power steering fluid type?

The recommended power steering fluid on the 2011 INFINITI G37 is Genuine Nissan PSF. Some of the products that You can use are Prestone Power Steering Fluid or Lubegard Synthetic Power Steering Fluid. The purpose of power steering fluid on Your vehicle is to keep You, the driver, steering smoothly. What power steering fluid does is that it eases the way that the wheels are turned so that the driving experience is a piece of cake. If You start to notice rough steering then I would go ahead and look at the power steering reservoir. Topping off the fluid is easy as You need to do is unscrew and top off before the MAX line.