Oil contamination causes approximately 80% of all system failures and reduces equipment reliability. 

Extreme contamination of the oil systems with particles and water causes critical downtime and high replacement costs for these cost-intensive components. 

Contamination takes the form of insoluble materials, dust particles, sand and rubber (hard contaminants), oil degradation products such as varnish, resin and oxidation residues (soft contaminants) and water. 

The smallest particles, (below 5 µm), free water and deposits from oil degradation products are often responsible for defects.