TSC sells Traveller® Universal Tractor Trans/Hydraulic Fluid that is compatable with Permatran III or AGCO XL-321. $19.00/2 gal. WIX hydro filter #57089 is $17.00. This filter fits some of the Kubota hydro models. - I am currently using this filter/fluid with no issues. My dealer left the area - nearest is 50 miles away.
I use NAPA filters on my 1010 for everything. No issues. And the NAPA Gold filters are made by WIX.