there was a bulletin on these..
its coz the jazz cvt's.. are shit.
what happens is that after a while.. some jazz's create this shuddering (which can be avoided by regular oil changes, but even still, cvt's are crap.).. our initial solution was to replace the start clutch. and after about 10 million start clutches we did.. honda sends out a bulletin saying all it needs is a genuine honda cvt-f flush, it doesnt to be reset, unless youve changed ur battery or wateva. so what we do now with jazz'z that shudder is just replace the oil, take it for a drive, then replace it again.. and shudder gone, and if isnt, new start clutch kit.

you will find that most honda's just use honda atf. they only recently brought out the cvtf, and we only get it in 60L drums.