Power steering
 

Hi I am new to this forum. I did a search on power steering fluid and it basically told me that the ps fluid in the car is ATF or automatic transmission fluid. I also know that I have to use a Dexron III fluid. On this site I found two type of fluid one labeled as power steering fluid the other one D4 ATF which can be used in cars that take Dexron III fluid. I just want to make sure which one should I buy to change out the PS fluid. By the way they are both made by Redline.
Here is the link to both
Turner Motorsport - Item# SPSF - RedLine Synthetic Power Steering Fluid - 1 quart
Turner Motorsport - Item# ATFD4 - Red Line Synthetic D4 ATF