What oil for my 2002 2.7 gearbox/diff

[lkchris]

Originally Posted by jsceash

I maybe sending you on a wild goose chase because I'm not sure what is available in the UK. That said I use Valvoline Syn Power Full Synthetic 75W 90, Hypoid recommendation meet recommendations for API GL-4 and GL-5, MT-1

Just so you know, GL-5 is suitable in differentials so ancient that they called for GL-4.

It is, however, NOT suitable in transmissions where GL-4 is specified.

[Jager]

The best fluid is Porsche... I have tried others and had issues shifting when cold. You should be able to purchase from Suncoast:

Manual Transmission Fluid - 75W - 90:Porsche Parts & Porsche Accessories - Wholesale Porsche Parts & Tequipment