For my production stuff/commuter cars I use cheap oil and simply check and change it once it gets brown/grey and smells like carbon. Cheap filters too.
Stp brand oil n filters.
Just over 300k on one and 326k on the other.
I use Schaefers oil in my old mopars and change every 7000ish.
Filters I wont skimp on . Speedtalk just had a great thread on oil filter testing .
Oil Filter Filtration and Flow Testing per ISO 4548-12 - Don Terrill’s Speed-Talk