Not full flow, but it will help alot. Go to your local Farm supply store and get some cow magnets. They should be about $5. Just put one in the bottom of the oil pan, and maybe one in the filter housing if there's room(if not it can be hose clamped to the outside of the filter housing, but it'll show). The magnets will catch any stray metallic particles floating around in the oil, much like a magnetic drain plug. You won't be able to clean the one in the pan without pulling it apart, but you can clean the one in the filter housing.
For those not familiar with cow magnets, they're 2"-3" long, some are smooth cylinders, some are rectangular(these work better because they don't roll around). You feed one to a cow, and it ends up sitting in the cow's first stomach. It catches any metallic debris(nails, fence wire, etc) that the cow may eat and keeps it from going threw the whole digestive track. Really.
-Jeff
