Hi Kacper4x412, the workshop manual says to use 'Case Hytrans Plus', I have used the Mobil equivalent 'Mobilfluid 428 multipurpose tractor oil (utto) and power steering fluid' (wow, that's a big long title, but that's what's on the drum!!!). The transaxle has wet clutch packs, and wet brakes, so make sure the oil you use is compatible for this application. Hope this helps, good luck!!
Tengo una retroexcavadora case s e no tiene fuerza tira mucho aceite la transmisión me apoyas con información y datos de posible reparación precio refacciones