Dave..I take it from the picture the by-pass is in the dome end not the engine end ( threaded end).
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When i got interested in donaldson filters, did a search on the nanofiber they used and it was first developed for artifical kidneys/dialysis machines. Donaldson licenses the use of the media. In the use in their filters its blown on with the first layer being very small micron and the two outer layers being larger micron holes. Sort of a depth filtering concept. When you take one apart you can seperate the layers by hand and they do have a different look. I have been running them on my cars for the last 3 years and have been very pleased with them. I drive old mopars that have the 3/4X16 threads that I can use donaldson's version of the fl1a.
Dan
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why did you resurrect a TWO+ year old thread?
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why did you resurrect a TWO+ year old thread?
Harry what was the answer you were hoping for?Quote:
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why did you resurrect a TWO+ year old thread?
Not quite the answer I had hoped for.
Harry
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"If they add another layer, do you think the level of filtration would be at a lower micron level? How much is too much?
Harry "
He was probably looking for the answer to this question. Post away Harry. I'd rather read about your filter questions than the 1,000th post on "thick or thin", "what is a synthetic", or "synthetic vs conventional"![]()
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I really do not know. There has to be some point where flow and filtering cross. I would bet that Donaldson has done their homework on this one to have it just about where it needs to be. They probably could add more filtering ability but at what risk. Probably would not hurt for short oil changes, but for extended drains like this was designed for, you want all the safe flow you can get.
I would contact Amsoil first, then Donaldson with this question. I'm sure one or both of them have all of the testing they did before they decided, this is it.![]()