A ferry operator requested an independent assessment of fuel oil cleanliness from delivery into a bunker barge through to fuel supplied to vessels. Testing carried out as part of a Delta-Xero fuel filtration assessment revealed severe particulate contamination, with fuel failing to meet ISO 4406 minimum cleanliness standards and engine manufacturer requirements. In some cases, contamination levels were so high that accurate ISO readings could not initially be obtained, highlighting a critical operational risk.
Customer savings & impact
Following the implementation and verification of Delta-Xero fuel filtration, the operator achieved both direct operational and financial measurable benefits:
Avoided engine damage and premature component wear by restoring fuel to within ISO cleanliness limits
Reduced downtime and maintenance exposure, supporting more reliable ferry operations
Lower long-term operating costs, as the bunker tank itself began to clean over time, reducing the need for future tank flushing and helping lower emissions
The full case study explains how Delta-Xero fuel filtration recovered heavily contaminated fuel, what ISO cleanliness levels were achieved, and what this meant in maintenance and cost terms.
Related Case Studies
79% Fewer Particles
A major Greek shipping company operating a large tanker fleet identified rising particle contamination levels in main engine lube oil
