1st .. lookup the GPM and PSI that the tractor has available , compare to the log splitter needs
There's been several 'threads' about using log splitter using tractor and 99.44% say not really practical. usually the GPM is far from ideal, so sloooooooow cycle times. IF splitter will be dedicated to YOUR tractor,then no worries about oil contamination. Mounting of the splitter can be 'interesting'. Then ther's the safety aspect.
Gas powered splitters are cheap, easy to use and allow tractor to be used while splitting. If splitter's on the 3PH, well, can't haul the firewood. If attached on the loader, better but it's a long walk to haul wood to the trailer on the back of tractor every log !
It'd be nice to hear from those with tractor mounted splitters to hear what they have to say.
big question is how much wood( cords ) are you splitting ?
just playing the 'devil's advocate' here.....