Another oil headscratcher involving Q2 diffs - Alfa Romeo Forum
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Hmmm 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.

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