bullitt_2620 Member Oct 11, 2005 91 0 6 San Diego, cali. Oct 19, 2006 #1 Oct 19, 2006 #1 This weekend i'm planning on switching to Royal Purple Synchromax for my transmission fluid. Do I need to flush my tranny out somehow when switching fluids? Thanks.
This weekend i'm planning on switching to Royal Purple Synchromax for my transmission fluid. Do I need to flush my tranny out somehow when switching fluids? Thanks.
StangPro New Member Sep 30, 2004 441 0 0 Roseville, MI Oct 21, 2006 #2 Oct 21, 2006 #2 No, just drain out the old and fill with the new.