[bojan]

Do you REALLY need to change the grease?
Your mount looks like pretty new one.. I obtained mine 3.5 years ago (black, no-goto) and the grease inside was of good quality (not black tar-like stuff - the valid reason to go through the re-greasing process) so I didn't have to re-lubricate the worms.
I dismantled it for other reasons (I changed the motors and replaced gear transfer mechanism with timing belts and pulleys, and that significantly improved the performance)

All this hype about bad lubricants in EQ mounts was warranted when they used that black stuff (this was actually kind of "damping grease", widely used to lubricate joints that do not move much.. for example Toyota use something with similar properties for their ball joints in steering mechanism, and it is excellent stuff to deal with a lot of vibration and high pressures on the joints).
They (Synta) used it to smooth the mechanical roughness and in-precisions of worms and worm gears at the beginning, but their quality improved significantly since then.

What problems/issues you have with the mount that lead you to conclusion you need to do it?

"No need to fix something that already works OK..."