Autobox oil change

Gonna change the filter and oil in my D2 auto gearbox tomorrow. Can anyone tell me what size hex drive i need for the filler plug(need to buy one) ?

So i have this morning changed the oil and filter in my d2 autobox. Changes gear much smoother now so I'm very happy. One question though, i only managed to get about 4.5 litres of oil back in the gearbox. Is this correct?

garyrigden said:

So i have this morning changed the oil and filter in my d2 autobox. Changes gear much smoother now so I'm very happy. One question though, i only managed to get about 4.5 litres of oil back in the gearbox. Is this correct?

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4.5 to 5 litres is correct. Did you follow the correct filling procedure? Engine cold and idling, move through all gears and back to P or N, top up to level.
The remaining oil is trapped in the torque convertor, best to change it again and add a bottle of Lucas Transmission Fix after a couple of hundred miles to dilute the old oil further.

Yes i did. Followed procdure on discovery2.co.uk . Will change oil again in a few hundred miles like you said.