You need to be buying the oil filter for the late 62s and the 65s (QSC motors). It is a lot finer filtration than the filters for the older engines. They all screw on to the same base. Kelly
If you want the best filters, buy Amsoil or the new Donaldson Endurance filters. Don't know the exact micron rating, but less than 15 and better than any other filters currently on market. Be prepared to write a bigger check for them however.
Donaldson P553000 is their standard filter for the cumm. 8.3's We've used these for years on the C engines including the QSC. The endurance filter is an extended drain filter designed to be used with oil sampling. We change at 115 hrs.
Fleetguard makes high quality filters. What ever kind you use don't prefill with oil. I have seen alot of engine bearings that look bad because of prefill.
Why wouldn't a person want to pre-fill the filtersIJ This is a new one for me. I always thought pre filling got oil circulated a little quicker. Please explain.
Unless you plug the center and fill through the outside little holes your engine is going to get unfiltered oil, your engine has enough lubrication without doing that if you stay at idle until oil pressure is up. Just because oil comes out of new jug doesn't mean it's clean enough for bearings. Never fill a fuel filter for an eletronic engine you can't even see 2 micron and that is the clearance on most new fuel systems