Bypass Oil Filters

Written by Rachel Arieff
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Bypass oil filters are meant to supplement, not replace, your engine's regular oil filter. Dirt particles cause engine wear. Most of the time, these particles are between five and 20 microns in size. Regular oil filters can typically only remove particles between 25 to 40 microns large. They're missing 60 percent of the particles that are wearing down your engine. Bypass filters basically do the fine tuning that regular filters can't do. By removing the tiniest particles of dirt from your oil supply, bypass filters virtually eliminate wear on your engine.

Good-quality bypass oil filters, such as those made by Amsoil, for instance, filter out particles as small as 1/10 of a micron! These filters work with a "partial-flow" method, in conjunction with your engine's regular oil filter. The bypass filters capture about ten percent of the oil at a time and trap the tiny, damage-causing dirt particles. For a six-quart system at an engine speed of about 45 MPH, bypass filters can filter the entire oil supply in about five minutes.

Other Benefits of Bypass Filters

This means that the oil supply is being filtered several times an hour, delivering only the cleanest oil to your engine. The precision clearances of your engine no longer need be vulnerable to danger from damage-causing particulates. Also, by getting rid of 60 percent of the dirt particles-- particles that regular oil filters miss--bypass oil filters end up conserving your oil supply.

This means that you can go for much longer periods of time without having to change your oil. This not only means savings for you, but it also means less stress on the environment, because you'll be throwing away far less used motor oil. Besides helping to reduce engine wear, bypass oil filters also help reduce rust, corrosion, and oil degradation by removing water from your engine.

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