[gbickle]

OK so I did the gearbox oil. (I have recently bought the car second hand). The 19mm bolt below the 8mm allen key fill plug is indeed the drain bolt.

under 1litre came out and was a bit brown but not bad. Syringed out a tiny bit more but still under 1litre all up. topped up with 1.9l of Nulon Full Synth 75w85 GL4 until it started coming out the hole. Not worried about overfilling even though ford say to keep it 1cm below the hole.

Drove the car. Feels like a completely new gearbox and changes so much slicker, even going into reverse. I would say part of this would have been down to the low oil level in there to be fair, but very happy with the new oil.

in 5000kms I will dump the oil again, so as to get rid of the last half a litre or whatever that is still in there getting diluted by the new Nulon.