My GF's Mazda 3 S 2012 came with a filter that was
Hastings LF113. The almighty interwebs couldn't tell me how that converts to other brands so I went into the book at AutoZone to find it by the make and model. It told me STP3614, which I got but when I got back home it was not the same (should have brought the old in a ziplock bag).
For the lack of something that by now I was hoping to easily find online, can you tell me how to convert that filter to something available at a large brick-n-mortar store, STP, Fram etc.
Last but not least, why aren't oil filters standard sized like oil is? The same filter by two different manufacturers sometimes has the same, sometimes different number, it's very confusing.