Another oil headscratcher involving Q2 diffs
As I post this, a Q2 diff is on its way from EB spares. Also AMSOIL 75W-90 Severe Gear GL5 rated oil from a distributor in Australia is also on its way.
In my owner's handbook it states using a GL5 rated gear oil in the GT V6. This rating apparently is important. However if changing to a Q2 diff. is GL5 ok or is GL4 the one?
From what I read in places, GL5 is not suitable for limited slip diffs. I gather the Q2 diff is not a limited diff. as such but something entirely different so a GL5 rating is OK.
Please enlighten me oh wise ones.
Last edited by PT14; 20-08-09 at 04:31.