Auxillary oil filter
Reply #3 –
the title of this thread sounds a bit different than the question your asking.
let me see if i understand what your asking...
you want to know how long(mileage/age?) your oil filer can last with just changing your oil alone?
this is the only link i can think off that can relate to what your asking even though it doesnt answer the question.
http://people.msoe.edu/~yoderw/oilfilterstudy/oilfilterstudy.html
from your description i take it your oil filer is remote mounted and not just inline from the oil cooler, right?