Oil restored to “as good as new” condition

The challenge 

A 2MW wind turbine gearbox had its oil condemned for disposal after 10 years in service. The 320 cSt synthetic gearbox oil showed severe varnish formation, extremely high particle counts, and degraded cleanliness, making reuse impossible under normal maintenance standards. The oil was scheduled for disposal, with full replacement costs unavoidable.  

Customer savings & impact 

Following controlled off-line filtration using Delta-Xero nano filtration, the results were verified through oil analysis and visual inspection: 

• Up to 97.6% reduction in particles (≥14µm) within 22 hours of filtration 

• Varnish potential reduced rapidly, with MPC results meeting minimum reuse standards in under 9 hours 

• Oil restored to “as good as new” condition, confirmed by independent laboratory testing 

The full case study reveals how condemned oil was recovered, what the before-and-after MPC and ISO data showed, and why disposal was completely avoided.  

Access the full results 

Download the complete wind turbine gearbox oil recovery case study, including MPC images, ISO particle trends, and laboratory confirmation.