This came from my sister's old Sienna that was totaled. I forget what year it was, but it was an '04 or '05. The filter sat around for a year or two but was just cut open today. The center tube fell out without touching it. There was a lot of gunk on the base plate and some sludge on the bypass valve and inside the center tube, it seems. Either that or possibly moisture/coolant contamination? I didn't really see anything unusual between the pleats. I do not recall how many miles were on the filter, but I remember it was on the van when she bought it from the dealership. It seemed to be very well taken care of, so I'm surprised there was a lot of sludge in the filter. I don't believe it was a sludge prone year.