We have seen Mazda North American Operations issued a warning to their US Mazda dealers stating this:
"The SKYACTIV engine oil filter (P/N PE01-14-302) is a unique high flow filter. Installing a conventional engine oil filter may store a TDC.
NOTE: The Mazda2 engine oil filter (P/N B6Y1-14-302A) looks similar; however, the internal structure is different. Do not use this oil filter on SKYACTIV vehicles."
Mazda OEM SkyActiv oil filters are unique filters with high flow but low micron rating.
SkyActiv oil filters have 15 "nominal" micron rating on filtering media but Mobil 1 oil filter has 30 microns @ 99% efficiency. There's no proper way to compare? Nominal micron rating on SkyActiv filters express the ability to capture particles of 15 microns at
an efficiency between 50% and 98.6%. On the other hand absolute micron rating on Mobil 1 filter shows the filter is capable of removing at least 99% of 30-micron particles.
Here is a
quote from On All Cylinders:
"⋯ But generally speaking, foreign material in the range between 10 and 20 microns will potentially do the most engine damage over time. So a filter that can efficiently filter within this range would offer distinct advantages and certainly reduce engine wear."
So the key here is we do know SkyActiv filters can filter damaging 15-micro particles up to 98.6% efficiency but we really don't know how many the 15-micron particles Mobil 1 filter can remove if any? To me this's so obverous that SkyActiv filters are much better on micro ratings.
Not to mention SkyActiv filters are specified as high flow, but Mobil 1[emoji769] M1-108A filter, like Bosch ST3300 filter, claimed it's equivalent to Mazda's standard flow B6Y1-14-302A filter.
And compare those filters with absolute micron ratings, Mobil 1 is the worst filter among filters you listed.
So why not just use SkyActiv OEM filters to remove any doubs?