Originally Posted by JoelB
Remember that oil does not have a finger, and cannot pres on the media in the way you did. So the "brittle media" is really a mute point.
You are correct in stating this. Just sharing an observation with the forum. When I cut filters open, I have a habit of thumbing through the pleats looking for shiny bits and carbon. In recent memory, I don't believe I've ever punched through an automotive filter with my thumb. It's not very common in my experience, usually the media will deflect with pressure. The last filter that did this to me was a very large two stage Wix XD (extended drain) filter on an International MaxxForce engine in service for 6,000 miles and had an insane amount of idle time. The bottom stage of the filter, which closely resembles an automotive filter, crumbled at the slightest touch. The International engine I mentioned though, in fact, was diluting the oil with diesel fuel. It added about a gallon of diesel fuel to the 32 quart capacity sump in a matter of days, only 300 miles. So for the sake of information and posterity, I believe it's important to note that fuel dilution (gasoline or diesel) has an extremely quick effect on degrading the integrity of a filter media. In the case of this EcoBoost, I would like to see my employer either implement a method of tracking engine hours (Hobbs meter) or shorten the intervals on the white fleet, mainly the police cars. Many of them are coming off warranty and will be my problem soon.