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Reply to "Bypass filtration and extended drain intervals"

Thanks for the detailed response. Everything you've said matches what I've been hearing and reading for years, however, I remain skeptical. A bypass filter can't remove acid and it can't correct viscosity that has been changed as a result of shearing or other contamination, right? In my business, recreational boat building and repair, there are several manufacturers of these systems selling products that make incredible claims for extended drain intervals. The engines we use are all diesel, mostly in the 100 to 1000 hp range and used between 100 and 500 hours per year. For storage purposes, we stress storing a boat, for the winter for instance, with clean oil in the engine. So, this negates one of the advantages of a bypass filtration system. But does it matter, couldn't you use one of these systems just to have cleaner oil without extending your drain interval?

Is there more information on these systems on the Noria site? If so I didn't see it.

Thanks
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