To add to Kevin's post, you'll find opinions running the gamut of them being useful to an oil filter being a complete waste of time. I'm on the useful end. While oil filters of that era were bypass filters and didn't filter all of the oil every time through the engine, my opinion is that some filtration is better than no filtration.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.