T5 gearbox oil

[Belle427]

http://www.opieoils.co.uk/p-965-fuchs-titan-atf-40...

This is what i chose recently.

[Cochyn]

Sorry for bringing up an old thread. But my new box is slightly noisy when cold, just wondering if there's any info on straight 75W oil in the T5? It's literally 1 up in thickness from the ATF, so hoping for more protection when cold.