those numbers make no sense because at 10 or 12 psid, (or in the case of a factory subaru filter, 24 psid) the bypass would open and the differential would no longer increase. There are so many variables that you aren't considering. Yes it is very clear that at 34 degrees those particular filters (for what application I still don't know) would probably bypass at over 2 gpm. But what about 50 degrees, or 150 degrees? I have never heard anyone but you decree that at whatever RPM you have decided it should be today, that a filter will bypass. But apparently you read another article over the weekend. No one is arguing that the bypass may open with 34 degree oil. However at operating temperature I don't buy it. But as I said I have never seen a car engine with a differential pressure gauge, and I am pretty sure you haven't either. Basically you have produced no conclusive evidence other than you saying so. water is wet.
Last edited by brokenhead; 06/22/2013 5:39 PM.