mitsu gearbox uses GL-4 oils
the transfer case which sends power to the rear uses GL5 oils
there are 3 diff oils on your ayc diff...
on the housing for transfer case / long shaft end - any GL5 gear oil
on the ayc pump - any automatic SP3 / SP-III / hydraulic oil
on the housing where the ayc gears are - MZ102520
Alot of ppl confused SP3 and MZ102520.
AYC pump and AYC housing uses diff oil.
i am not sure what can be substituted for MZ102520. but i believe alot of ppl is using the wrong oil for the ayc gears/wetclutch.
if i am not wrong, you dont need to change ayc oil that often. every 40,000km - 60,000km
for the ayc pump just need to make sure that the oil level is ok, oil can located in your boot.
AYC can use mit diaqueen auto gearoil??