Oils for my 2004 Jinma 354

engine 15/40 diesel oil , front axle 80/90 gl-4 to be safe will not harm yellow metals(gl-5 can be used if formulated not using chlorine) trans all gear 80/90 gl-4 ,   rear end  with  hydro pump aw-46 and power steering if has own sump aw-46. so basically if it is gear 80/90 anything hydro aw-46 will get you working as best as I know.

well you need to know where your pumps are ,manf. of tractors each have their own ideas of how to do things. your 3 point hitch most likely has a pump in the rear end of the tractor for the lift so if it does aw-46. I would think would be a good choice. Power steering systems can run off a common sump or have it’s own hydraulic source, you will have to check on what you have. I would say that as far as the backhoe goes aw-46 should be fine , but there  again does it have it’s own tank or does it run off the tractors hydro supply ? As far as the loader goes I have seen them with tanks mounted on the sides of a tractor for the oil storage but I do not think you will have that. You need to see if the loader runs off the tractors 3 point pump or a separate pump is used and where the oil comes from. you need a manual for the tractor and study it so good decisions can be made.

So I would assume that you have a common sump tractor  one hydro system for the tractor ( back hoe separate system aw-46 there ). So you could use the heavier weight oil like universal tractor fluid (front axle not included 80/90 there). In real cold weather you might notice steering not right until fluid warms up a bit. But for the gears you need oil that will protect under load and give the hyrdos good flow.