What is the best way to maintain the gearbox in a Vauxhall Insignia?

I have a Vauxhall Insignia and I am unsure of the best way to maintain the gearbox to ensure its longevity. Does anyone have any advice on the recommended maintenance routine?

Regularly check the transmission fluid levels according to the manufacturer's instructions, and top up if necessary.

Ensure that the gearbox is always warmed up before pushing the car hard to prevent any potential damage.

If you notice any unusual noises or vibrations, have the gearbox checked by a reputable mechanic as soon as possible to prevent further damage.