Tell me your top 3 oil filters for efficiency....

[Fair enough]

These are low pressure filters. They'll burst at more like 250psi.
There's plenty of oil filters that don't have a bypass.
2 to 20 micron particles cause most of your wear, there's a lot of hydraulic filters that go well into that 2 to 20 range. For example my log splitter came with a 25mu rated filter, I'm sure it filtered well into the 10 to 20 micron range somewhat reliability.
After a quick bitog search I found a bigger 8 micron that would fit that filter head and that's what it's running now.
Sub 10 micron absolute low pressure hydraulic filters are pretty common.

I think oil filter makers know a full flow filter can restrict only so much and the bypass opens, or if no bypass valve the oil pump relief valve opens. But it could be a maker wants the numbers to look good and get the filters out the door. It really should be a recommended filter according to the maker.

 

[4WD]

I think oil filter makers know a full flow filter can restrict only so much and the bypass opens, or if no bypass valve the oil pump relief valve opens. But it could be a maker wants the numbers to look good and get the filters out the door. It really should be a recommended filter according to the maker.

Fair enough

 

[oil pan 4]

I think oil filter makers know a full flow filter can restrict only so much and the bypass opens, or if no bypass valve the oil pump relief valve opens. But it could be a maker wants the numbers to look good and get the filters out the door. It really should be a recommended filter according to the maker.

I say always run a bypass in a full flow.

 

[ZeeOSix]

Band wagon is like a picture of something. People jumping on things influenced by others opinions. So there is this band on a wagon all tooting the same song.

People jump on a product "bandwagon" around here due to positive technical reasons. No product here that shows to have performance or quality issues are popular.

 

[ZeeOSix]

I think oil filter makers know a full flow filter can restrict only so much and the bypass opens, or if no bypass valve the oil pump relief valve opens.

I've never seen any engine that doesn't have a filter bypass either in the filter or in the engine itself. Not a good idea to not have a filter bypass valve for obvious reasons.

 

[Fair enough]

Bandwagons materialize for a reason. The PureOne and then OG Fram Ultra both created a huge bandwagon until the wheels fell off those wagons and people bailed out, lol.

Another reason is voices influencing. Whole new world of influencing out there now. It doesn’t mean the reasons are correct for the band wagon. You have the band leaders playing, and the rest on the wagon clapping, getting off and on the wagon.
Whip City is on to something with his light spot tests. That’s why I say Fram has pretty good media, even the EG shows few to none on my observations.
I just looked at a 20 year old new Toyota filter that was in the garage. No need for even a microscope, the light spots are obvious when held against a bright led flashlight. The new media they use like for the N1 is a lot better.

 

[ZeeOSix]

Another reason is voices influencing. Whole new world of influencing out there now. It doesn’t mean the reasons are correct for the band wagon. You have the band leaders playing, and the rest on the wagon clapping, getting off and on the wagon.
Whip City is on to something with his light spot tests. That’s why I say Fram has pretty good media, even the EG shows few to none on my observations.
I just looked at a 20 year old new Toyota filter that was in the garage. No need for even a microscope, the light spots are obvious when held against a bright led flashlight. The new media they use like for the N1 is a lot better.

Most "bandwagaons" that appear on a website like this one are for technical reasons and data. Ones that form due to just "feelings" are obviously easy to spot. Whip City's 100x magnification shots of media are purely subjective since there is no official data to correlate what people see with their eyes and make a "conclusion" in their head about the performance of the media based on the "light holes" seen in the media. There is probably a weak correlation at a gross level between those media visual shots and filtering performance. Until I see an official ISO 4548-12 test on the current Toyota Denso filters, there is nothing to prove they are any better than before, that being around 50% @ 20u.