Quote Originally Posted by StockEngine View Post
oem.. there are varieties ng mercon, for example mercon lv and mercon v are not interchangeable. malas mo if the idiot mechanic isnt updated. you can still go wrong with oem.
Yes, that is why I buy the oil myself from Lightning Automotive (they specialize in Ford/Chevy/FCA parts) and make sure it is Mercon V. What I mean is that as long as you use the correct OEM ATF your tranny is less likely to act up or feel different after a fluid change.