Amsoil EAO filter Microns
- Thread starter harry j
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Let me try again, as you danced around the question.
An oil filter can separate the VI improvers out of a motor oil?
Please point me to some/any documentation that backs up this theory.
It is not documented to my knowledge, GeorgeCLS had customer complaints that their oil was out of the designated viscosity. He reasoned that it may be the 3 micron beta 2000 filters he was using. It occurred during high heat conditions when the VI's were at their longest. More research should be done on this as it would be an item of concern.
Harry
Does anyone know how large the VI improvers get? I have been unable to find any information on the net.
Harry
Harry
The Eao filters down pretty low out of the box. My concern is that as it gets more efficient with use, will the VIs be stripped. As the VI improvers are of a fixed quantity, will the filter gradually remove them? I would like to know conclusively. Of course, if the oil has no VIs, it will not be a problem.
Harry
Harry
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I dunno
Schultz of PALL felt that the alleged 6um lower limit would be HUGE on the molecular level in terms of size. I don't have a clue to the comparative scales here.
How big (long) does an uncoiled polymer get??
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I dunnoSchultz of PALL felt that the alleged 6um lower limit would be HUGE on the molecular level in terms of size. I don't have a clue to the comparative scales here.How big (long) does an uncoiled polymer get??
Inquiring minds want to know Gary.
Harry
How about all you oil professionals out there, does anyone know?
Disclaimer: I am not an expert,
But, it seems to me that if a filter could remove VII from oil, the the toilet paper filters that have been used for many years would have shown up as a problem before now. According to Ralph, the TP filters down to one tenth of one micron, although I don't know at what efficiency. And I have never seen anyone dispute Ralph's statements on this forum. Comments?
But, it seems to me that if a filter could remove VII from oil, the the toilet paper filters that have been used for many years would have shown up as a problem before now. According to Ralph, the TP filters down to one tenth of one micron, although I don't know at what efficiency. And I have never seen anyone dispute Ralph's statements on this forum. Comments?
This may be a none issue, but I would really like to know if there is anything to the idea that fine filtering will strip VII's from any oil. I understand what you're saying, bypass systems really filter to a low micron level and no one has ever said anything about VII stripping. Still, it was brought up by GeorgeCLS and I would like a professional response.
Harry
Do Amsoil TSO ASM and ASL oils even have any VII in them?
I believe the TSO does, high quality of course.
Now, are the VII polymers larger or smaller (when at high heat temperatures, that is, fully extended) than the oil molecule? I have read that 40 microns is the threshold of visual accuity. The Eao filters at 7 microns with 50% efficiency, but it also filters at 6 microns with pretty good efficiency, I estimate 45%. How about less than 7 microns? I believe that the Eao will filter down to a small micron level, perhaps low enough to remove some VIIs?
Harry
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According to This site, VIIs can have a molecular weight of 25K to over 1 million. This IS very much larger than most oil molecules which I believe are only double digit in molecular weight. I am not I chemist however!
Where is a chemist when you need one!?
Thankyou for digging that up Tempest, it looks like the VII molecule can be rather large, especially in an oil that has a large viscosity spread. This deserves more research, will a very efficient filter strip the VII's or not. I guess it didn't matter until the Eao was released. All the filters previous to it's availability, didn't filter as deeply.
Harry
Yeah, I know, bypass oil filtration systems have been available for some time and they filter down pretty small. Wouldn't bypass system owners like to know one way or another if therer is something to this "problem". George?
Harry
Harry
Ok, I just found on Wiki that:
Hexadecane has a molecular mass of 226.44. It would stand to reason there are larger molecules as well. I also found a few references to esters in the 400-500 range, but not sure if they were for lubrication.
So typical oil molecules are tiny compared to VII's, but they would have to be BIG molecules to be captured by a filter.
I wouldn't worry about the Eao. Like others have said, the toilet paper and other by-pass filters have been in use for years with no apparent problems.
Hexadecane has a molecular mass of 226.44. It would stand to reason there are larger molecules as well. I also found a few references to esters in the 400-500 range, but not sure if they were for lubrication.
So typical oil molecules are tiny compared to VII's, but they would have to be BIG molecules to be captured by a filter.
I wouldn't worry about the Eao. Like others have said, the toilet paper and other by-pass filters have been in use for years with no apparent problems.
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Wouldn't Amsoil have tested for this prior to filter release?
You'd certainly think so.
As I previously mentioned, the EaO is essentially a superb 10 micron filter and would not be affecting VI improver.. VI improver stripping has only occurred with real 1 and 3 micron absolute microglass filters. I have never seen a particle count for even the toilet paper by-pass filtration units that indicated a 3 micron beta 1000 level of filtration.. Yes, they filter down to 1 micron but not very effectively... Thus little or no affect on VI improvers..
Bottom line, VI improver stripping is absolutely no issue with the Amsoil EaO filters from my experience..
George Morrison, STLE CLS
Bottom line, VI improver stripping is absolutely no issue with the Amsoil EaO filters from my experience..
George Morrison, STLE CLS
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