Can't guarantee results, but from my own personal experience, the Xado stuff is brilliant.
We have a 130k 2006 Jazz which had quite a bad judder which improved a bit after an oil flush/change.
The Xado EX120 has pretty much banished the judder.
We also have a 54k 2004 Jazz that only had a bit of a judder when warmed up & pulling away hard. Put the EX120 in that & it's smooth as silk.
No idea how the stuff does such a fantastic job, but it's well worth the (small amount of) money.