Originally Posted By: OneEyeJack
....but the Trasko works well.
It's used on a bunch of stationary generators. They monitory them pretty well and claim that the filters do an excellent job in a vary harsh environment, freezing cold, boiling hot, no warm up time and loaded to full power at 60 seconds from start.
They like the Trasko and keep some spares for new generators.
Trasko (and MicroGreen for that matter) make total sense. For those that don't know, the Trasko oil filter will filter the oil thru a toilet-paper-like roll at low oil flows, and as soon as oil demand rises, will switch to another oil filter that allows more oil flow, that way the differential pressure drop across the oil filter is always kept low-ish.