What tranny Fuid?

[Mr GT 02]

Im thinkin about flushing my tranny oil and filling it up with Royal Purple Synchromax Manual Transmission Fluid. How many bottles does it take to fill up the tranny with this stuff? How many Quarts?
And...does anyone currently use this? DOes it relieve the notchyness when shifting?

I have the Tr-3650 5 speed tranny..
http://mustangtuning.com/royal-purple-synchromax-manual-transmission-fluid.html

 

[steveb24]

4 quarts

 

[Figment]

3.3qts, 4 for may make it hard to shift