Factory Alli and diff oil is synthetic or not?

[CanadaKev]

Do we have synthetic oil in the 1000, and front and rear diffs in the '02's from the factory? I see in the manual that they put Transynd in the 6 speeds but not the Alli's? And as near as I can tell, there is synthetic in the diffs. Is that also true?
:confused:
Kev

[Zapper]

It is my understanding that all LCTs (and WTs for that matter) manufactured after 1/02/02 were filled with Transynd synthetic.

[DmaxMaverick]

CanadaKev

The rear end is synthetic.

Everything else is not (except for the ZF....GM decided they could afford to use "the good stuff" in the 25 or so actual ZF's they produced).