Hey knowledgeable people i have a 2002 Tacoma 4x4 auto with 45K on her. Ive installed a trd (hayden) transmission cooler inline with the stock cooler. Between the coolers ive also installed a remote transmission filter from permacool with a moble one filter/filter magnet from filtermag.com. Overkill yes. and im currently using Redline D4 soon ill be flushing it out again with amsoil universal atf, anyway since im using synthetic in my auto should i use a friction modifier as well? Is there a added benefit with the modifier? Thanks.