1995 Acura Integra LS. 2,500 miles on the fill of Havoline DS. Auto-RX Clean Phase #2. Looks like there's some brown assembly glue on this filter (stained brown from the oil). Experienced the same exact thing on the ST6607 I cut open earlier this year. Very strong can, and appeared very well built. Some very cold temps (0-20F) and some warmer temps (70F+) Unlike the last two filters I've cut open on other cars, the pleats were hard but not brittle and did not break apart in my fingers when I spaced them with my fingers:
Close-ups of the media:
Close-ups of the media: