Endure IX

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Filtration is a critical step in phosphate ester maintenance. Endure IXTM is a proprietary technology that removes all forms of phosphate ester degradation products. In addition to all types of acids, the absorption media removes phenolic alcohols which are responsible for varnish formation in EHC systems.


  • Removes ALL acids (stronger and weaker)
  • Removes varnish forming byproducts
  • Highest acid capacity
  • 10x the performance of Fuller’s Earth
  • 2x the performance of other IX filters
  • Increases resistivity
  • Removes all dissolved metals
  • Longest filter life on the market
  • Enables a Fill4LifeTM Phosphate Ester Fluid
  • Measure phenolic acid reduction with RULER™


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