Topic 1348 installed last week April 2012 on Kohler 19hp engine, filter oriented vertical thread end up. Oil and filter change last week. Oil changed at least once, April 2016. Perhaps one other time between initial and 2016 that I forgot to record, or not. Fully expected to find at least some wavy pleats, which wouldn't have bothered me. Wouldn't have been completely shocked to find something more. As can be seen, with exception of oil to media came out looking much as I expect it did when installed. No wicking of media for pics, exactly how it came out. Silicone adbv still very pliable. All in all boring, which is good.
No hours meter on my mower, however for those interested in more info takes just about an hour to cut yard, average once a week. Season runs from late Feb. through Nov. Suffice to say it seen significant hours over the 7+ years. Replaced with another 1348 and some QSUD 10w30 I got on AAP closeout for ~$2.50/qt. Obtain the NG for <$4 on local Napa twice yearly sale. I may cut the media off the endcaps later and post pics. However, did thorough inspection including light down centertube, no tears or other issue noted. Enjoy.