I change gear oil for Liqui Moly 75W80. This was not good idea, gears was hard on cold engine.
I talk with Chrysler specialist and he say that for gear box NSG370 we can use only oil with specification MS-9224. For differential in good condition 75W90 full synthetic, for old and tired diff 85W90.
I change gear oil again for RAVENOL STF SYNCHROMESH TRANSMISSION FLUID and now is OK.