Just foward of seat, below it on transcover/rockshaft there a steel housing sticks foward, has filter in it.

What type filter is it? Is it reusable/steel mesh? or a paper cartridge that you replace completely? want to service all fluids &amp; filters.

Also how do you know the difference for the micron size? is there a physical difference you can see? I have no clue how long ago this filter was serviced, but figure, just service it and keep it in logbook for tractor.