When I was in Europe, the Fiat given to me to use had a screen! What the... where's the filter? VW's had screens, too. So did a host of others.
Most of our oil gets bypassed by the filter, hopefully until the next time around (maybe). All the junk in your oil pan passes through a gross pickup screen, then to your oil pump rotors BEFORE it gets to the filter.
Real race cars use TWO oil filters to ensure most of the oil really gets filtered.
Bottom line is, the REAL filtration comes when you dump the old oil, and replace it with fresh, particularly if you do it at regular 3,000 mile intervals. Guys who extend their oil changes need to be much more concerned over the best filter they can find.
Royal Oak, Michigan (Four miles north of Detroit, and 12 miles NORTH of Windsor, Canada). That's right, we're north of Canada.Ford 292 Y-Block major overhaul by simplyconnected