I used Mobil1 MV syn ATF.
The best way to remove all old fluid is raise the vehicle in the front, disconnect return line, drain the reservior and plug the end where the return line was connected, fill up reserviour to full, crank the steering wheel right and left to lock without engine ON. All fluid in the steering column comes out while keeping the PS reservior always full. Reconnect return line and good to go, start engine and u will see a lot of bubbles in the reserviour (becoz air entered the PS system) but then it will settle down when the ATF circulates a few times. With engine ON and vehicle raised do steering locks left and right 4/5 times to push out all air in the system.
Good luck.