went to the parts store where my purchase started this discussion:
Me: “I have a problem with an oil filter”
Clerk (Nick): “sure, what’s up?”
Me: “well, see this used 3353, this receipt for 2 new ones I bought here on Dec 13 and these two new 3353s?”
Nick: “What’s the problem?”
Me: “both of these new ones leaked. I thought maybe I messed up the seal on the first one so changed it quickly to not lose much of the new oil. See how the new ones are convex instead of concave like this old one? So I can’t get the seal tight”
Nick: “what vehicle is this from?”
Me: “not sure that matters, since here’s the old one that didn’t leak and here’s the new ones that do – it’s easy to see why and they’re all Bosch 3353s”
Manager: (who came up since I was on the only one at the counter) “Nick, start the refund process while I go check the filters”
Manager: (from the back of the store) “Nick – hold on”
Manager brings two new gray-boxed 3353 to the front counter; opens them, and they’re clearly concave.
Manager: “well I have never seen that before”
Me: “obviously me neither”
(several minutes of car guys picking up and looking at all the filters and their labels…)
Manager: “you want a refund?”
Me: “thanks, no – the right filters are all I need. Thanks for being so good about this”
And I go home with two new concave Bosch 3353 oil filters for my “vehicle”
thanks all for humoring me and goading me to follow up.