I have 10k miles on a dual pleat filter and cut it open. I have an auxiliary lift pump, so the entire filter media surface gets used.
The media starts off white. The first layer was black after 10k miles, and the second layer (same paper media) was brown, indicating that it was trapping dirt that was missed by the first layer. I also saw a couple of spots on the second layer that were quite black, indicating that there were weak spots or holes in the first layer that led to dirt getting past layer 1 and depositing on layer 2. I think this design is an improvement over the old filter, but I would never remove my Kennedy MEGA filter. Anyone else try opening one of these? SPICER
The media starts off white. The first layer was black after 10k miles, and the second layer (same paper media) was brown, indicating that it was trapping dirt that was missed by the first layer. I also saw a couple of spots on the second layer that were quite black, indicating that there were weak spots or holes in the first layer that led to dirt getting past layer 1 and depositing on layer 2. I think this design is an improvement over the old filter, but I would never remove my Kennedy MEGA filter. Anyone else try opening one of these? SPICER