16 replies to this topic

[Mark McCallister]

Last order from Mazda Motorsports I ordered some oil filters to refill my shelf. I used to really like the blue ones we got from them. A few years ago we started getting the B6Y1-14-302-9A short black filters. I figured OK, whatever, it's not like they stay on the car very long anyway. Now on this last order, the part number substituted in as B6Y2-14-302-P1. These are taller (good!), made in USA (good!), but otherwise, I'm not too sure about them. There appear to be a lot fewer and more widely spaced holes inside. The gasket is rectangular not round. The main holes look smaller, and it actually feels lighter than the B6Y1 filters, which means to me less metal inside. The white paint means "value edition" to me. Should I be paranoid about these for racing application? I looked over at miata.net and what little discussion there wasn't too positive. Thoughts?

[Alberto]

I was wondering about that too. I just ordered a few filters for my RX7 which uses the same oil filter as the Miata. Got a link to miata.net discussion?

[FTodaro]

I went to the track and planned to change the oil there while it was hot. By mistake I grabbed the oil filter for my daughters 2008 Honda civic. Much to my surprise it was the same size except the Honda filter canister was about 40% larger. Now I order Wix filters for a 2008 civic an they are huge compared to the OEM Mazda filter and I am told Wix makes a quality filter and the pressure relieve valve is withing the Mazda spec.

[ChrisA]

I like the slightly longer Millennia filter by K&N HP-1010/Mobil-1 M-110 or the Wix/NAPA Gold 51356. Both of these have good reputations for build quality and performance.

[pitbull113]

wix/napa gold is the shiznit

[Glenn]

I went to the track and planned to change the oil there while it was hot. By mistake I grabbed the oil filter for my daughters 2008 Honda civic. Much to my surprise it was the same size except the Honda filter canister was about 40% larger. Now I order Wix filters for a 2008 civic an they are huge compared to the OEM Mazda filter and I am told Wix makes a quality filter and the pressure relieve valve is withing the Mazda spec.

And what would that "spec be"? And "who" told you that? Call me a sceptic, but you "gotta show me" before I'm convinced.

[FTodaro]

Ok Glenn I am going to call you a skeptic but only because you asked me too. First off, I would never expect anyone to take what i say unquestioned as I would hope most people do there own due diligence in investigating my comments. I am pulling this from memory, but the spec i am referring to is the filers bypass valve, one was at 11psi and the other was at 13psi, I can't recall which was which but that was what was important to me was that they both had one and the relief pressure was close.

What I also liked about the Wix filer was that it used Natural paper vs. synthetic material. I am not sure what the OEM used, but generally I think the Wix filter is regarded as a good after market filter.

I am just throwing it out there for consideration.

[Rob Gibson]

Not sure about the new filter quality but I just went on the site and P/N B6Y1-14-302A is still available for purchase.

[FTodaro]

Wix filter spec. http://www.discountf...m/wix51356.html

Part Number: 51356 UPC Number: 765809513563 Principal Application: Acura (02-11), Chrysler (92-06), Dodge (92-05), Eagle (92-98), Ford Probe (93-97), Honda (01-09), Infiniti/Nissan (96-09), Mazda (71-00), Mercury Villager (99-00), Mitsubishi (90-12), Saturn (04-07), Outboard Marine Engines, Various HD Equip. All Applications Style: Spin-On Lube Filter Service: Lube Type: Full Flow Media: Paper Height: 3.402 Outer Diameter Top: 2.685 Outer Diameter Bottom: Closed Thread Size: 20X1.5 MM By-Pass Valve Setting-PSI: 8-11 Anti-Drain Back Valve: Yes Beta Ratio: 2/20=6/20 Burst Pressure-PSI: 363 Max Flow Rate: 9-11 GPM Nominal Micron Rating: 21
Gasket Diameters Number O.D. I.D. Thk. Attached 2.475 2.173 0.233

[Glenn]

Ok Glenn I am going to call you a skeptic but only because you asked me too. First off, I would never expect anyone to take what i say unquestioned as I would hope most people do there own due diligence in investigating my comments. I am pulling this from memory, but the spec i am referring to is the filers bypass valve, one was at 11psi and the other was at 13psi, I can't recall which was which but that was what was important to me was that they both had one and the relief pressure was close.

What I also liked about the Wix filer was that it used Natural paper vs. synthetic material. I am not sure what the OEM used, but generally I think the Wix filter is regarded as a good after market filter.

I am just throwing it out there for consideration.

So LONG winded reading on the subject! But informative!!!!
http://forum.miata.n...ad.php?t=439628

[Glenn]

Ok Glenn I am going to call you a skeptic but only because you asked me too. First off, I would never expect anyone to take what i say unquestioned as I would hope most people do there own due diligence in investigating my comments. I am pulling this from memory, but the spec i am referring to is the filers bypass valve, one was at 11psi and the other was at 13psi, I can't recall which was which but that was what was important to me was that they both had one and the relief pressure was close.

What I also liked about the Wix filer was that it used Natural paper vs. synthetic material. I am not sure what the OEM used, but generally I think the Wix filter is regarded as a good after market filter.

I am just throwing it out there for consideration.

Discussion of "natural vs Synthetic"
http://www.aftermark...nglish/02-2.pdf

[Glenn]

Discussion of "natural vs Synthetic"
http://www.aftermark...nglish/02-2.pdf

One more.....looks like "synthetic" wins the battle of flow after contamination.....
http://www.aftermark...nglish/09-1.pdf

[FTodaro]

Discussion of "natural vs Synthetic"
http://www.aftermark...nglish/02-2.pdf

I have read someplace that Natural fiber has advantages over synthetic but in light of the many combinations, I guess it would depend on which Syntactic. That was all very interesting. It looks like the wix filter that I posted does not filter as fine of particles as the OEM when looking at the numbers.

[Glenn]

I have read someplace that Natural fiber has advantages over synthetic but in light of the many combinations, I guess it would depend on which Syntactic. That was all very interesting. It looks like the wix filter that I posted does not filter as fine of particles as the OEM when looking at the numbers.

Also:

"As these media are loaded with contaminant, we see another advantage of the synthetic media increased flow area. Contaminant that plugs up 50% of the cellulose media surface area will only plug 10% of the synthetic media area. The result is much lower restriction in the synthetic media when compared to cellulose media for the same level of loading"

[dstevens]

What I also liked about the Wix filer was that it used Natural paper vs. synthetic material. I am not sure what the OEM used, but generally I think the Wix filter is regarded as a good after market filter.

In many forms of racing, high end pro and amateur/club Wix are considered to be one of the best options for a filter. Mobil and K&N are good as well. One thing to remember when we start comparing road car data to race car data is frequency of change. I see many here think fluids every race weekend is overkill (and at this level it wouldn't surprise me if it was, but I can't say for sure) but most of the race apps I've done/seen change far more frequently than street cars. And the engines are typically cleaner and opened more frequently particularly at the pointy end of the grid. OTOH, if you run regionally with a 100k plus package that has never been opened, you may very well need the best filtration you can get.

[Mark McCallister]

So it sounds like Wix/Napa Gold/Mobil-1/K&N are all reasonable choices, and nobody has anything particularly bad or good to say about the white B6Y2-14-302-P1, but nobody has any bad experiences to report with the now-unavailable blue or short-black (B6Y1) filter either, which may still be sourceable. And then something about natural vs. synthetic. Reasonable summary?

[Glenn]

So it sounds like Wix/Napa Gold/Mobil-1/K&N are all reasonable choices, and nobody has anything particularly bad or good to say about the white B6Y2-14-302-P1, but nobody has any bad experiences to report with the now-unavailable blue or short-black (B6Y1) filter either, which may still be sourceable. And then something about natural vs. synthetic. Reasonable summary?

Bottom line I know what my engine builder says........ust the Mazda Filter. If Mazda has a replacement it must be equal or better than the orig part too much liability not to be. Hate to have some attorney racer giving them grief