I continue to use engine oil, hydraulic oil, fuel and air filters from the Kubota dealer. There isn't that much price difference. And one of the local auto parts dealers said - "Oh, these will be OK". Did a 180 and exited. My tractor is worth more than a few dollars saved ...........
I've been using NAPA Gold for many years. NOT PLATINUM. I think they are WIX filters. Stay away from Fram. Too weak inside. There is a You Tube video that compares oil filters. You will be amazed.