I had to change the power steering fluid out of my car once because of poor performance. My old attitude use to be hey, oil is oil at least I changed it. Well, after watching a documentary about the science that goes on in the petroleum labs and the attention to details it looks like a lot of manufactures of transmissions & engines have your best interest at heart. The recommended lubricants are always a safe way to go especially with the amount of money you have to invest in automobiles. Certain fluids flow better and the virtuosity of certain types is taken into account. That's an easy fix, I would start there first by changing with recommended fluids, see if that makes a difference If not, cross that off your list and move forward.