Just something for you to consider... Even tho the paper throw away filters say they filter down to 5 microns, for how long do they do this? Have you ever taken a paper filter apart and look at it? Not all throw aways are made the same... Some filter thru the media while others flow over the media... The pleats inside are different from filter to filter, some are deeper than others, some don't have as many... None of them have magnets...
What people don't realize is, a lot of these paper throw away filters plug up and when that happens, they build up pressure... All filters have a bypass valve... Most are set to open between 6 and 8 psi... Once a filter is plugged, the bypass valve opens so in effect, the oil is no longer being filtered so where is your 5 micron then? I think people put too much stock into this micron size...
Here's a lil more about what I'm talking about from K&P Engineering;
We use ASTMF316 testing procedures which eliminate many of the user variables found in the SAE procedures. Basically, the filter media is pressurized from one side, and when the media starts passing particles, that is the micron rating. We sent filter media from several common brands of paper filters to the lab to be run through the ASTM test. We sent the media to the lab with no names, just numbers for identification so they wouldn't have any idea what brand filter they were testing. The results for the paper filters ranged from 48 microns for the best filter to over 300 microns for the worst filter. Our tests were right in line with other testing results we have researched that have paper media filters passing particles anywhere between 50 and 90 microns. What does this mean? Paper filters are rated on averages, percentages of efficiency (also known as beta ratios) and multiple passes, so a 10 micron rated paper filter (as advertised on the packaging) may be letting particles 50 microns and larger through. The medical grade stainless steel cloth that we use is consistent across the entire media surface and is rated at 35 microns, meaning nothing larger than 35 microns should pass through the material. The bottom line is we meet or exceed the filtration performance of OEM filters, eliminating any warranty issues.
I run the Pure Performance filter on my bikes which are pretty much the same as the K&P filters with the same micron rating... I can attest that the PP filter saved my topend... I like the reusable filters, they are ez to install and clean... And, I'm not adding to the garbage dump... Any guess as to how many oil filters are thrown into our land disposal sites every year? Just something to think bout
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