Microgreen filter, 3,000 mile dipstick

[ZeeOSix]

Originally Posted By: UncleDave

Heres what MG replied to I hatetochange oil

"Thank you for your inquiry. The full flow filter is 99%@20 microns. The microdisk is rated 99%@5 micron. The 2 micron rating of the microdisk is captured through oil analysis and you can even find customers who have posted their results on BITOG. The Fram Ultra that you mention lists their efficiency as 99%@ >20 microns on the page link you listed. We’re not trying to start anything, but it’s worth mentioning since that is a slight contrast vs. what is being stated below and many filters would be able to claim 99% @ >20 microns. "


There really aren't that many oil filters that are 99% @ or greater than 20 microns.

I have a feeling the ">20 microns" threw MG for a loop and they don't fully understand that ">20 microns" is essentially saying "at 20 microns and greater". Been many threads about the nomenclature after so many here seem to misunderstand it.

 

[UncleDave]

Yeah Ive seen that hashed that out a few times here, its only mildly controversial in that its brought up a bunch.
I thought about taking that out, but then Id be talking the post out of context

UD

 

[oil_film_movies]

Originally Posted By: Corelokt
If 5 micron and less is the goal, why not just a bypass filter?
A bypass filter dumps 1% to 10% of the oil directly back to the sump without going to the engine. That means you are missing some oil flow. I prefer all the oil the engine was designed for. With the MicroGreen, 100% of the oil is routed to the engine. A preference of mine, I know, as engines generally do OK on less oil flow with a bypass and its extra plumbing.

 

[UncleDave]

Some % of flow has to go through the MG bypass.

It may not amount to a molehill pressure wise, but its got to take something.

Even if its .5% its still something.

UD

 

[oil_film_movies]

Originally Posted By: UncleDave
Some % of flow has to go through the MG bypass. It may not amount to a molehill pressure wise, but its got to take something. Even if its .5% its still something.

But the little flow going through MG teflon disc goes to the engine, the same as the high-flow filter media part of the filter. So, its a true parallel flow path, not a bypass-type thing like Amsoil bypass filters that have the external plumbing. Those Amsoil bypass oil filter set-ups dump the bypass filter's flow directly back into the sump.

 

[UncleDave]

Ok, I got what you are saying...

UD

 

[CharlieBauer]

I'm thinking that a Microgreen would be especially good to use on factory fill, especially if you're torn between draining the oil early vs the thought that factory fill was uniquely formulated.

 

[oil_film_movies]

Originally Posted By: CharlieBauer
I'm thinking that a Microgreen would be especially good to use on factory fill, especially if you're torn between draining the oil early vs the thought that factory fill was uniquely formulated.
Lots of very small metal. It'd be fun to put a MicroGreen on a brand new engine, run it for 2,000 miles, then cut it open, remove the teflon disc filter inside, slice it in two, and place a strong magnet on the exposed innards. Fine iron powder???

 

[Corelokt]

I still may do a bypass filter that runs on its own pump. The amp draw would be minimal, flow needn't be much. From sump and to sump.

 

[goodtimes]

We used to install the Frantz oil filters inlet off the oil sender usually. The filter had a small orifice to restrict flow. The tiny amount of flow was taken after the flow went through main and other bearings. It's clear though the internal bypass like Microgreen shunts off no flow. Not sure but it seems the disk would slightly increase the differential pressure in the filter.

 

[UncleDave]

Another setup is a dual filter head with a trasko on one of the heads.

Kind of like a "mini" frantz filter. Same concept tight cellulose media.

Best I can tell it basically it runs the majority pf the time in bypass and what seeps through gets scrubbed.



UD

 

[kohnen]

Originally Posted By: goodtimes
Not sure but it seems the disk would slightly increase the differential pressure in the filter.
The extra filter in parallel with a standard, full-sized main filter only adds to the opportunity for oil to get from the input side of the filter to the output side of the filter. So, the disk would slightly decrease the differential pressure in the filter, because it provides slightly more opportunity for the oil to get from inlet to outlet.

The math is the same as the resistance of resistors in electronics - two resistors in parallel will ALWAYS have lower resistance than the smallest resistance.

 

[goodtimes]

Originally Posted By: kohnen
Originally Posted By: goodtimes
Not sure but it seems the disk would slightly increase the differential pressure in the filter.
The extra filter in parallel with a standard, full-sized main filter only adds to the opportunity for oil to get from the input side of the filter to the output side of the filter. So, the disk would slightly decrease the differential pressure in the filter, because it provides slightly more opportunity for the oil to get from inlet to outlet.

The math is the same as the resistance of resistors in electronics - two resistors in parallel will ALWAYS have lower resistance than the smallest resistance.


I was thinking along the lines that the disk takes up space where full flow element could have been. Not that the disk was added to the same size element. The outlet tube for the disk is very small. It would have to all be figured out as to dimensions and flow rate. Not too impressed with the quoted MG response above. So I won't be throwing away all my filters and buying a Microgreen at this time. I'll just stick with a good name brand filter and call it a day.

 

[Toptierpao]

Been using them for two years on commercial lawnmowers. Have not done a uoa yet,but,I will. Oil does stay cleaner longer using the MG filter over the Wix filters I was previously using.