Originally Posted By: KingCake
Originally Posted By: goodtimes
A tiny tear on a filter means almost all the oil is unfiltered
Nope. That's not how physics works. I suggest reading books.
I don't know about that King Cake, but I provided some explanation in my post, you did not. It's not even something to argue about, it depends on the size of the tear, the condition of the media clogged or not, the oil viscosity, the temperature, and the rpm of the engine or flow rate, and more. It could be calculated how much oil is unfiltered. The blurbs on bypass and relief valves sticking doesn't include a third factor, if the media is new or clogged. The two valves are usually closed in normal use, and the oil flows through the element. That Cadillac in the picture and the oil and filter don't look worn out to me. The chance that the bypass and relief valve are both stuck and the element can't flow oil well enough to keep the pressure low enough through the filter is virtually zero. My vote is for bad installation. I'll be sure to get to the library as soon as possible to start reading books.
Delco changed the part from PF2130 to PF2129G if that is the filter used on this car. FWIW I was at WM yesterday so looked at the filters of course, the PF1229G was on the shelf at 7.97, made in USA and looked like a very nicely made filter, small, with metal center tube and round holes.