We stock the replacement oil filters from China, Delo is a good diesel engine oil we use Shell Rotella 15w40. These tractors were designed to use motor oil in everything, we use the rotella in everything but the hydraulics and we use AW32 hydraulic oil in it. You can use 90wt in the transmission also. Whatever you use please flush out all of the old fluids first"everywhere" then put the fresh fluids in. You will stop alot of problems before they start if you will do this.
Tommy
Affordable Tractor Sales