I'm not an expert, but I have a 14C. The operators manual calls for the following lubricants:
Engine -"EO". EO = 15/40 wt engine oil
Transmission hydraulic system-"EO". EO= 15/40 wt engine oil
Final drives- "MGO". MGO = multi purpose gear oil
Transmission torque converter - "TF". TF = transmission fluid. Says use "ATF type A, Suffix A, or C-3 transmission fluid".
Dozer hydraulic system says one of the followng: "Engine oil MIL-L-210C, API, CD Type C-3 Trans FLuid TO-2 qualified, API, CD".
This is for a 1987 14C with an Iveco engine. Your 10C may be different. Proceed accordingly. The 14C machines would overheat due to radiator plugging. Watch your temp gauge. Good luck!