Bypass filters use extremely fine particle filtration media that allows them to achieve an absolute filtration rating of 2 microns at about 98.7% efficiency. Note, absolute, not nominal. The bypass filter adapter has a restrictor orifice that allows a very slight amount of oil through at a given time; typically around 5% of the oil pump's total volume. Bypass filters can be set up to feed and return through an oil filter sandwich plate, which would probably have to be custom, or through a T-fitting on the oil pressure sender port, returning through the valve cover through a swivel fitting (requires drilling a hole in the valve cover or oil cap).Filter bypass? I just want a filter relocation kit, to make it easier to replace the darn thing.
Back to your question, and although I have no basis of which to disagree with you, regular and routine service with high quality oil, oil filter and air filter at intervals shorter than recommended will probably go far toward meeting your goal of limiting pollutants in your oil, and engine. Probably not to 2 microns, but is 2 microns even a size detrimental to a stock gasoline engine? Is a typical OEM oil pump capable of moving oil through filter media that fine? If removing 2 microns, at what point are we removing additives from the oil itself?
For those of us not familiar with them, how is a filter bypass system achieving this 2 micron goal? Thanks.
The one I always use is Polaris Labs, under AMSOIL's Oil Analyzers Inc private label. Polaris Labs is an ASTM certified testing facility (another popular one, Blackstone Labs, is not), and includes nitration, oxidation, fuel dilution, and TBN testing. They also test for hundreds of other companies including ConocoPhillips, Ingersoll Rand, Cummins, and Allison.Thanks, XR. Can you suggest oil analysis firms of good reputation to use? And approximately how much does the process cost?