I wonder what the flow rate & lifespan is at a 5 micron rating... I figure turbine oil is super thin maybe?I was going to do a similar project years ago but never finished it. I collected a few engine oil filters from aircraft PT6- turbine engines, that were made of stainless steel and had a 5 micron mesh. They were about 2" diameter by 6" long, in perfect condition, only replaced because the manufacturer said they had a limited life. They had o-rings on both ends but fit into the engine itself.
I'm going to try to make my own and see how it goes, it's just another side project after all! If I'm not satisfied, I have these as a backup:

Lifetime Oil Filter Element #PP135 - PurePower!
When You Upgrade To A PurePower! Lifetime Oil Filter, Your Engine Will Thank You. Double-Woven Stainless Steel Filters Catch More Than Disposable Filters.