1. Removes carbon and metal particles down to 3 microns.
2. Engine and oil system operate more efficiently.
3. Reduces false chip lights.
4. Keeps magnetic plugs clean and operating longer.
5. Doubles the oil change interval from 100 hours to 200
    hours (Allison CSL 1093).
6. Protects expensive oil coolers.
7. Removes the abrasive grit ingested in the engine's oil     system from hostile environments (deserts, beaches,     construction sites, etc.).
8. Increased bearing, gear, and seal life.
9. Microdelta® differential pressure indicator alerts operator
     of impending filter bypass and need to change the filter      element. Each filter also comes with a bypass valve to      ensure a constant supply of oil to the engine.
10. Each filter system comes in an easy to install kit which
      is FAA certified (STC). No special tools required.

Over 4,000 helicopter operators can't be wrong!