I've got a 2010 FG Turbo and at about 80.000 Km's, it started to clunk into 1st gear when stopping at lights. Installed a new tranny filter and flushed the fluid and put in GW Syntrans about 12 months ago and the 1st gear clunking was totally eliminated. However, it does have an engine rev variation when cold for about 2-3 kms from a cold morning start BUT only in manual shift mode when you change up gears at minimum speed/ revs. However, leaving in drive, the upchanges are about 10km/hr higher or a few hundred revs higher and the box performs absolutely normal - no surges. As soon as the temp gauge gets to "warm", the box is normal. After approx 10,000Km's, I dropped the tranny pan and changed the filter. I cut open the filter and it was as clean as, so I wasted a few bucks on filter and oil, but gained peace of mind that the Syntrans was all good. GW have released a later version of Syntrans, but I haven't researched it. Will have a look at that next tranny oil change in about 50K klms time.
