T5 Manuals- Fully synth auto fluid or not?

[dans_vz]

Hi guys,
Had a quick search and found out DexronIII auto fluid is the way to go for my T5 gearbox, but is it meant to be the fully synthetic type or just the non synthetic (mineral?) fluid?

[wildss]

personally i wouldnt use dex3 in a pre vr t5, do a search on here and sc i cbf typing lol

[dans_vz]

Hmmm I wonder about maybe putting in half gear oil and half auto fluid plus the lubrizol additive as well?..

[danja]

Mixing oils, especially synthetic and mineral, is a big no-no.

[dans_vz]

Ah I see... whats the best thing to do then?

[danja]

Use whatever Holden specify for the gearbox.

[Zuicider]

Use whatever Holden specify for the gearbox.

smartest thing i have ever heard from you danja :P

[DavoVP]

castrol vmx 80.................. best oil ever for the lowly T5

[Morton]

I'll second that. Specifically designed for boxes requiring DXIII.

[danja]

smartest thing i have ever heard from you danja :P

Don't get excited, I think the planets all aligned for a second.

[maldotcom2]

Pre VR was the 80W 90 gear oil, after that it was DexIII. No idea why.

[wildss]

different syncros