Quote:
Originally Posted by 40 Deluxe
Except it filters out (maybe) the dust AFTER that dust has gone through the cylinder and down past the rings into the oil. Further, the dust particles that get past the rings are extremely small, too small to be filtered out. If I remember, most filters only catch dirt particles 10 microns and larger. The dust that gets by the rings is smaller than that.
|
That's why I favor bypass over full-flow filters for Model A. The oil filter is having to grab a lot of contaminants that an air filter would normally block. A bypass system lets you put an extremely fine filter in the flow and capture much smaller particles, without worrying about blocking the flow of oil on startup. A really good filter, like the PL30001, will be rated to capture 99% of particles over 20 microns, which means it also captures a large percentage of particles smaller than that.