Manual says 6.1 quarts (5,8 L).
Oil type recommendations vary with operating temperature, but they should "meet API Service Classification of CD or better." Whatever that means
For my upcoming (first) change, it'll probably be 10w-30 (-20 to 95 F oper range) or a similar ranged synthetic.
-rus-
My manual does say I can use a synthetic engine oil. Based on availability, I'll be using a semi-syn. As for hydraulic fluid, I haven't been able to find out what the Bobcat spec actually is for their hydraulic/hydrostatic magic juice. But price-wise, it really isn't a lot more than anything else local (other than store-brand).
-rus-