This was a surprise to me. Filter is the same as the AC Delco PF1127 - pic of it for comparison. I purchased these filters on sale from Rockauto for [email protected] a few months ago. Ran a little less than 5k miles over 4 months time with PYB 5W30. My best theory on it's failure is that I have less than a one mile trip to the freeway and it wasn't up to cold oil thickness when I have to merge onto the freeway . But the coldest it's been here so far in the morning was around 27F.