ATF Question...which oil?

[reflexboy]

My friend has a 2000 (X reg) 1.2 16v Auto Vauxhall Corsa (last of the Corsa B shape) He wants to change the ATF as the car has now done 50K miles. He phoned three different Vauxhall dealers and got three different answers as what ATF to use. Obviously he wants to ensure the correct ATF is used.....Anyone know? and how many litres it will use? TIA

 

[jaymanek]

Autodata doesnt list it, there werent many Autos sold!

I bet Dexron 2 or 3 would be more than fine.