This filter was on the Burb for 5,845 miles/4 months, including a 3,000 mile/10 day road trip, running G-Oil 5W-30. I will be sending an oil sample in for a UOA. Disassembled components. Well constructed with a very pliable silicone ADBV. Seam side with pleats that are wider than on the other side of the media but not at all wavy and no tears. The scuff on the end cap is from where my hobby hacksaw nicked it while cutting the can open. Other side of the media with even pleats. Looks like a good filter overall. It does not have as many pleats as the Bosch Premium 3423 that I used on the previous OC (http://www.bobistheoilguy.com/forums/ubb..._(M#Post3470948) and is not as sexy, but I would trust it for 10k miles, as it does not have the media waviness and Purolator tear issues. I just put a Napa Gold on the Burb and it has pretty much everything I am looking for in a premium filter: great filter efficiency, mixed cellulose/glass fiber media, base-end bypass valve (although not needed in my applications), silicone ADBV, and, perhaps most importantly, sleek black exterior.