Got some Mobil 1 Synthetic ATF today. It was recommended to go with royal purple by my mechanic. Whats everyone else use around here? This car has 130k miles and I really doubt its been changed before. Its been sitting for 5 years. So whats the best stuff I should use? Or just use this: https://www.mobiloil.com/USA-English/MotorOil/Other_Products/Mobil_1_Synthetic_ATF.aspx