for a small, simple machine. 6qts for the hydraulic drive system. 3qts for the transaxle and 2 qts for the engine. A rolling mini spill hazard!
FWIW, I'm running Shell Rotella-T 15w40 for the engine and hydraulics and Supertech 75w90 in the transaxle. (hood off for ease of maintenance); 1979 model year Case 220.
Joel
Joel