Owners manual says Dexron2, but i think if you go to the dealer they'll give you Type-4 fluid as a replacement.
I changed the oil in my MX-83 A340E and I used 10 Liters of oil. Must be the same thing for the 341 since it's the "same" transmission.
1 question I have to ask to ppl here, should i get an external oil cooler just for the transmission or the stock one cools enough?