Recently, Mazda changed the p/n of the oil filter used in the protege. However, this is not merely a change in number but the filter itself is obviously physically different. This leads to the question, is the new filter of the same known high quality standard as the previous model? That question serves as the motivation for this thread.
All 1990-2003 Proteges (including the MP3, P5 and MSP), all 1990-2005 Miatas, and all 2004-2008 RX-8s (as well as the RX7s) use the same OEM filter: Previous p/n: B6Y1-14-302-9A. new p/n: B6Y2-14-302-P1. This filter has an M20 x 1.5 thread, an anti-drainback valve, a pressure relief setting of ~ 14-18 psi, and a black-painted filter cannister. New p/n: B6Y2-14-302-P1. Same specs with a white filter cannister.
Many of us have substituted the Mazda OEM 626 V6 oil filter for the standard Protege type because it has a longer cannister with greater internal volume and a larger filtering media which should be an advantage in keeping oil clean, particularly if one is using extended oil drain intervals made possible with synthetic oils. All other specs are the same which makes it a direct replacement for OEM. Previous p/n: JEY0-14-302-9A. New p/n: G6Y0-14-302-P1. Since I've been using the 626 V6 oil filter for many years now, the following discussion will apply strictly to that model. The dimensions of this filter, measured with my calipers, are: height from top to gasket surface = 90 mm; diameter = 65 mm. Depending upon the particular brand of filter under consideration, the 626 filter has ~ 20 to 30% more internal volume than the Protege filter.
Let me state that I believe the OEM filter to be completely adequate if factory oil change intervals are followed and that Mazda would not short change us on quality or recommend an inferior product. The use of the larger filter is probably overkill, but there it is.
How do we know that the previous Mazda filters are of extremely high quality? TheMAN has done a detailed analysis of the JEY0-14-302-9A explaining its internal construction and where they're sourced from. I strongly recommend that anyone interested in this topic read his thread. You can access it at:
Until someone does a similar in-depth analysis of the G6Y0--14-302-P1, we can only speculate that it meets the same high quality standards as the earlier model.
Appearance-wise, in contrast to the earlier one the new replacement filter is painted white, has a flat instead of a rolled gasket, and the internal sleeve is crimped rather than pressed into the filter body (see photos below). In fact, the more I looked at this new filter, the more it started to look like a rebranded Purolator L14610. I accessed their website, looked at the photo of the 626 V6 filter and compared it with my Mazda filter. Sure enough, they look identical (see the photos below and you be the judge). I may yet go to PEP boys and buy the purolator just to compare the two together. Could P1 in the p/n refer to Purolator? Nah, that's too obvious.
Now, if I'm correct here I'm not disparaging Purolator filters in thinking that I might want something better. I'm sure that Purolator is a good filter but after all these years of running around with a super filter, if the new Mazda ones aren't quite in the same category perhaps I'd better think of going aftermarket in search of a new, more ultimate, type.
There are many filter studies out there that purport to give the lowdown on what's best. I found one that I thought extremely comprehensive and intelligently carried out in which the researcher studied a large number of oil filters at considerable expense and gave a detailed analysis of their construction, carried out filtration tests, and attempted to assign a grade, or score, to each individual filter. This is the "Oil filter Comparison Study" and can be accessed at:
Based on the study's conclusions, I decided to consider Mobil 1 and K&N filters as possible replacement candidates. I don't like the way Amsoil is marketed and I'm not a fan of RP. I bought Mobil 1 (p/n: M1-110) at my local PEP Boys but they were out of stock on the K&N (p/n: HP-1010). When that's available, I'll line the three up and stare intently at them until the one true filter makes its presence known in my heart. Will he choose Mobil 1, K & N, or OEM? Stay tuned. I have to decide soon because it's time to change my oil. The nectar of the Gods awaits me.
One aspect of oil filter construction worthy of mention is the type of filtering media employed. Most filters use a cellulosic-based paper filtering media whereas some use a synthetic formulation. It's generally agreed in the industry that synthetic media can trap smaller particles than conventional types but possibly at some increase in flow resistance. In any case, type of filtering media doesn't seem to be the controlling factor in determining quality. To the best of my knowledge, Mazda OEM filters and K&N use conventional materials while Mobil 1 uses a conventional/synthetic blend.
One final thought. White oil filters are girly. Oil filters should be black because they dissipate heat better that way.
Happy Motoring!
Selected Oil Filter Dimensions
Mazda G6Y0-14-302-P1: 90 mm x 65 mm (measured)
K&N HP-1010: 95 mm x 68 mm (published)
Mobil 1 M1-110: 85 mm x 68 mm (published)
Happy Motoring!
Photo 1: New Mazda Filter p/n:G6Y0-14-302-P1
Photo 2: Gasket End of New Mazda Filter
Photo 3: Purolator Filter L14610 (from their website)
Photo 4: Mobil 1 Filter p/n: M1-110
Photo 5: Gasket End of Mobil 1 Filter
Photo 6: Height Comparison of Mazda and Mobil 1 Filters
All 1990-2003 Proteges (including the MP3, P5 and MSP), all 1990-2005 Miatas, and all 2004-2008 RX-8s (as well as the RX7s) use the same OEM filter: Previous p/n: B6Y1-14-302-9A. new p/n: B6Y2-14-302-P1. This filter has an M20 x 1.5 thread, an anti-drainback valve, a pressure relief setting of ~ 14-18 psi, and a black-painted filter cannister. New p/n: B6Y2-14-302-P1. Same specs with a white filter cannister.
Many of us have substituted the Mazda OEM 626 V6 oil filter for the standard Protege type because it has a longer cannister with greater internal volume and a larger filtering media which should be an advantage in keeping oil clean, particularly if one is using extended oil drain intervals made possible with synthetic oils. All other specs are the same which makes it a direct replacement for OEM. Previous p/n: JEY0-14-302-9A. New p/n: G6Y0-14-302-P1. Since I've been using the 626 V6 oil filter for many years now, the following discussion will apply strictly to that model. The dimensions of this filter, measured with my calipers, are: height from top to gasket surface = 90 mm; diameter = 65 mm. Depending upon the particular brand of filter under consideration, the 626 filter has ~ 20 to 30% more internal volume than the Protege filter.
Let me state that I believe the OEM filter to be completely adequate if factory oil change intervals are followed and that Mazda would not short change us on quality or recommend an inferior product. The use of the larger filter is probably overkill, but there it is.
How do we know that the previous Mazda filters are of extremely high quality? TheMAN has done a detailed analysis of the JEY0-14-302-9A explaining its internal construction and where they're sourced from. I strongly recommend that anyone interested in this topic read his thread. You can access it at:
Until someone does a similar in-depth analysis of the G6Y0--14-302-P1, we can only speculate that it meets the same high quality standards as the earlier model.
Appearance-wise, in contrast to the earlier one the new replacement filter is painted white, has a flat instead of a rolled gasket, and the internal sleeve is crimped rather than pressed into the filter body (see photos below). In fact, the more I looked at this new filter, the more it started to look like a rebranded Purolator L14610. I accessed their website, looked at the photo of the 626 V6 filter and compared it with my Mazda filter. Sure enough, they look identical (see the photos below and you be the judge). I may yet go to PEP boys and buy the purolator just to compare the two together. Could P1 in the p/n refer to Purolator? Nah, that's too obvious.
Now, if I'm correct here I'm not disparaging Purolator filters in thinking that I might want something better. I'm sure that Purolator is a good filter but after all these years of running around with a super filter, if the new Mazda ones aren't quite in the same category perhaps I'd better think of going aftermarket in search of a new, more ultimate, type.
There are many filter studies out there that purport to give the lowdown on what's best. I found one that I thought extremely comprehensive and intelligently carried out in which the researcher studied a large number of oil filters at considerable expense and gave a detailed analysis of their construction, carried out filtration tests, and attempted to assign a grade, or score, to each individual filter. This is the "Oil filter Comparison Study" and can be accessed at:
Based on the study's conclusions, I decided to consider Mobil 1 and K&N filters as possible replacement candidates. I don't like the way Amsoil is marketed and I'm not a fan of RP. I bought Mobil 1 (p/n: M1-110) at my local PEP Boys but they were out of stock on the K&N (p/n: HP-1010). When that's available, I'll line the three up and stare intently at them until the one true filter makes its presence known in my heart. Will he choose Mobil 1, K & N, or OEM? Stay tuned. I have to decide soon because it's time to change my oil. The nectar of the Gods awaits me.
One aspect of oil filter construction worthy of mention is the type of filtering media employed. Most filters use a cellulosic-based paper filtering media whereas some use a synthetic formulation. It's generally agreed in the industry that synthetic media can trap smaller particles than conventional types but possibly at some increase in flow resistance. In any case, type of filtering media doesn't seem to be the controlling factor in determining quality. To the best of my knowledge, Mazda OEM filters and K&N use conventional materials while Mobil 1 uses a conventional/synthetic blend.
One final thought. White oil filters are girly. Oil filters should be black because they dissipate heat better that way.
Happy Motoring!
Selected Oil Filter Dimensions
Mazda G6Y0-14-302-P1: 90 mm x 65 mm (measured)
K&N HP-1010: 95 mm x 68 mm (published)
Mobil 1 M1-110: 85 mm x 68 mm (published)
Happy Motoring!
Photo 1: New Mazda Filter p/n:G6Y0-14-302-P1
Photo 2: Gasket End of New Mazda Filter
Photo 3: Purolator Filter L14610 (from their website)
Photo 4: Mobil 1 Filter p/n: M1-110
Photo 5: Gasket End of Mobil 1 Filter
Photo 6: Height Comparison of Mazda and Mobil 1 Filters
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