VR4 TransferCase & Differential

[EdmundVR4]

Can anyone advise what is the recommended oil change interval for the gearbox, transfercase & rear differential of the 8G VR4 ? Also, is Mobil 1 recommended, as it is a GL5 formulation ? (Mobil 1 is not recommended for the GTO.
Thanks.
Ed

[Nick VR4]

Can anyone advise what is the recommended oil change interval for the gearbox, transfercase & rear differential of the 8G VR4 ? Also, is Mobil 1 recommended, as it is a GL5 formulation ? (Mobil 1 is not recommended for the GTO.
Thanks.
Ed
Engine every 4500 miles
Gearbox 4500 miles or 9000
Trans and diff 9000 miles

[EdmundVR4]

Thanks Nick.
Are GL5 rated oils recommended ? (Mobil 1 for example)