Maybe this is why Denso ftf has metal encaps, while oem Toyota filter doesn’t. Encouraging.
OEM engine oil filters
- Thread starter Ausfahrt
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It is common for OEM's to own the die's at contract stamping plants. So they can take them elsewhere to stamp parts if needed. However for an oil filter I can't see how it matters. There is hardly anything proprietary in an oil filter.
Even if the OEM one is different its debatable whether that means its better. The OEM spec was probably mostly written by whomever they got to make there filters the first time, and they just cut and paste from there. OEM's never change stuff like that until it gives them trouble.
would you say the bypass setting on a Subaru Tokiyo Roki black filter made in Japan was/is proprietary? I have not found any decent aftermarket that mimicks the stock spec as of yet. Not many commit to just a single numerical value as the OEM, instead they tout a range within their own product spec.
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My WRX was new in 2014 and in 2014 is when I ran into the Fram Blue replacing the Japan black filter. I traded the WRX for a first year Hellcat so I only owned that WRX long enough for 1 oil change.
As I recall ( its now been a few years and I forget stuff ) but I remember researching and the WIX at that time was the same PSI bypass spec of that factory black Japan made filter but that was over 10+ years ago and thats when WIX was WIX and not owned by MANN+HUMMEL.
Boy I sure miss the simple old days of oil filters...
I hear you. The almighty dollar and greed far surpasses quality these days. Although this 24 WRX LTD puts a smile on my face, if I had kept many of the old muscle cars I`ve had, they did absolutely the same. Most of the Subaru diehards know of the issues with by-pass specs. and more. unfortunately the times have changed and the FB groups and forums are hide in the basement dweller platforms to constantly argue. So the more educated people leave or stop posting. Mann-hummel I always thought was a decent product. The Indonesia made Roki filters are different, even the thickness of the ADBV, smaller filtering area etc. BUT it is what the dealer installs on the wifes new crosstrek. Can`t go wrong with the subi filter when it comes to warranty protections and a service record. And again SOA, or the dealer can be a PITA if an aftermarket filter is suspect of a failure. I "would" say that most subaru drivers are not aware of the correct by-pass requirement for the current 2.4/2.5 boxer engines. I have never had a failure from any filter or oil used in any application as long as I have done my due diligence and got the correct parts.
now reading countless discussion on the topic, there is a validated reason, a lot of smarter people have included pressure differentials, filter materials and flow rates into the equations and in most cases saying that filtration has come a long way to negate that spec... hmmm ok, but SOA, and many filter manufacturers have not committed to their exact definitive answer.
I have run Purolator and Wix on a past 5.3 silverado and others. heck even Mopar OEM filters were sound. I would have no issue if I could find a suitable aftermarket for the 2.4/2.5 boxer engines. there is just a lot of conflicting information on both sides of the isle.
man thinking back decades ago, the people behind the counter at parts stores knew more, actively helped in what you needed, while using paper catalogs if not from memory. I cannot even get a ft length of fuel hose from todays counter people without asking a million ?s. when I tell them its a snow blower, I get that deer in the headlights look, lol.
lol, I remember when Castrol and Fram were the bomb back in the day...
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I cannot fathom how a spring can be proprietary.
Beyond that I will not join the Subaru bypass pressure debate. Clearly they march to their own drummer.
lol, so true. My head spins with this phenomenon. without the long winded approach, Subaru specs 23 psi. its just simple enough to use the OEM during the warranty period. I have read numerous valid responses, and in regards to better filtration, flow rates and the like that others seem to negate the Subaru Spec. with that said my other points were this huge gaggle of information or misinformation out here.
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What about the Wix 57055XP for a Subaru which is 27 bypass?
The OEM filter for my 2016 Outback has a bypass of 23 psi. The Carquest Premium I use shows 20-30 psi on Advanced Auto website.
so in theory it would by-pass @ 20? correct? To me that range would say its ok for other applications up to 30 or anywhere in between.
I have no idea, but I assume that for some reason, they won't reveal the exact setting, but it happens somewhere above 20 and somewhere below 30.
my point exactly.
Absolutely nothing wrong with that. I use OEM. For two reasons 1. Only Fleet Guard makes the new oil cartridge filter for the 6 gen Cummins. 2 I like Tokyo Roki filters for my Subaru. That way there’s zero question on quality.
I beg to differ! Subaru and them going away from Toyko Roki filters to the blue can of death filter. Was honestly a horrible choice. Now they’re back using Tokyo Roki again. So yes they contrated out. But cardboard end caps and collapsed filters didn’t bode well so tgey went back to high quality filters. So not all OEM is good and not everything after market is great. I prefer OEM but sometimes I like after market too.
So how is that any different than what I said?
You said it yourself. Maybe the OEM is good. Maybe the OEM is bad. Maybe the OEM spec changes and it was once good and now it isn't. Who knows the spec is never published.
Oil filters are 100% caveat emptor.
The correct filter bypass valve setting is not only dependent on the expected max oil flow rate and viscosity, and expected debris loading, but also on the flow performance (the dP vs flow curve) of the media element. Some of that higher Subaru bypass setting could be due to the filter being slightly more flow restrictive. Of course, some of those Subarus oil pumps put out some crazy volumes of flow, so that would require a higher bypass valve setting.
The way I look at it is if a filter maker specifies a filter for an engine then should probably trust that they specified it correctly. No way to prove it was specified wrong without your own investigative costly testing.
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I was using OEM filters for my Silverado until I saw one cut apart courtesy of Whip City Wrencher. No metal endcaps, sloppy gluing, cheesy leaf spring, inefficient cellulose media, glue-only seam...very unimpressive.
I'll just stick with my go-to, the ever popular Carquest Premium. It's just a better filter in every way.
I'll just stick with my go-to, the ever popular Carquest Premium. It's just a better filter in every way.
Thank You Sir.
I know some oil filter data sheets I have seen will specify when a bypass starts to open and when it is fully open. I just assumed the same when a range is listed and not that it was some proprietary data to be unknown to the end user.
That would be cool if it was actually specified ie: Purolator in stead of guessing when a range is displayed... I can`t assume anything these days. A poster here diligently contacted many in the inquirey, and no individual would commit this elsusive info.
