87% Cleaner Oil

The challenge 

A power generation facility operating a GT26 gas turbine experienced persistent lubrication issues caused by severe varnish formation. Oil analysis showed critically high MPC values, indicating a high risk of varnish-related failures, reduced heat exchanger efficiency, filter blockages, accelerated component wear, and compromised turbine reliability. Previous filtration approaches failed to control varnish levels or stabilise oil condition.  

Customer savings & impact 

After installing Delta-Xero varnish removal filtration, the operator recorded clear, verified improvements: 

• MPC values reduced dramatically, indicating a significant reduction in varnish potential 

• Particle counts reduced by up to 87%, improving overall oil cleanliness 

• Lubricant oxidation stabilised, supporting longer oil life and improved turbine reliability 

The full case study details how varnish levels changed over time, what oil analysis and micropatch testing revealed, and why previous solutions failed to deliver sustainable results.  

Download the complete power generation gas turbine filtration case study, including MPC trends, particle count data, and micropatch analysis.