Studies by industry experts, educational institutions, professional associations, and others have consistently determined that very small ferrous debris (often less than 5 microns in size) traveling through a vehicle’s lubrication system may cause considerable damage to engine wear-sensitive surfaces. By contrast, a human hair is about 40 microns in thickness.
Modern engines have tighter tolerances, resulting in smaller, and more restricted pathways for oil to travel, and they rely less on steel and more on lightweight materials, such as aluminum. Tighter tolerances and large “soft” targets make the removal of hard ferrous debris critical for optimal performance and longevity. The greater the amount of soft materials made from aluminum, lead, copper, zinc, and other soft materials found in an engine, the larger the number of targets for steel debris to strike and damage. Unfortunately, the typical factory spin-on oil filter is not capable of capturing the ferrous material below 25 microns. And damage to engines from debris as small as 2 microns has been documented.
Made of strong billet aluminum, MagDog fits almost any spin-on oil filter. Installation is quick and simple, and maintenance consists of opening the chamber and cleaning the magnets about every 25,000 miles. MagDog has been tested by independent laboratories with extremely positive results.

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