That is not exactly correct. On the Amsoil dual remote filter, it flows through the bypass filter normally, filtering below 1 micron and it is a very big filter. If it becomes plugged or if you rev high and your demand exceeds what can flow through that filter, the valve opens and it then flows through the regular full flow filter, so you should never get unfiltered oil.rtking said:As for the filter... having a filter work down to 3 microns is great, but bear in mind that it will begin to plug-up after a while. If the filter becomes to restricted, a bypass valve will open and you've got unfiltered oil circulating around your engine. Not good.