DARRINGTON - BULK DIESEL STORAGE TANK

ADDITIONAL THIRD SAMPLING

Overall Summary

First Sample — Before Cleaning (17/07/2025)

• Condition: Fuel was too dirty to provide a meaningful ISO code — extremely high contamination and visible debris. • Diagnosis: Action Required — particulate contamination far beyond acceptable levels. • Water Content: Present at elevated levels (38 ppm on similar baseline samples). • Recommendation: Required installation of offline/polishing filtration before the fuel could be reliably used

Second Sample — After Installing Kleenoil MS8 (24/07/2025)

• Condition: Massive improvement after initial filtration pass. • ISO Cleanliness: 19/18/15 — approaching acceptable target for diesel fuel used in sensitive engines. • Water Content: Dropped significantly (from ~38 ppm to ~32 ppm range in subsequent tests). • Visual Clarity: Fuel clear/bright with only trace particulate. • Interpretation: The Kleenoil MS8 effectively removed the bulk of loose contamination and water, transforming the fuel from heavily dirty to serviceable condition

Third Sample — Most Recent (01/09/2025)

• Condition: ISO Cleanliness shifted slightly to 20/18/14. • Visual: Fuel remained clear/bright with no visible particulate. • Water Content: Stable and low at 32 ppm. • Diagnosis: Action Required only because the sample still sits just above the ideal ISO target of 18/16/13; otherwise, chemistry and water remain good .The slight increase in particle count is not a failure of the filtration system. As the tank level dropped without being refilled, the sampling point reached older, settled debris and sludge closer to the bottom. This is normal in tanks that have built up contamination over time. • Settling Effect: Over years, heavier dirt and sludge accumulate at the bottom of storage tanks. When fuel levels drop and suction points move closer to this zone, more legacy contamination gets drawn into the sample. • Continuous or Permanent Filtration: If the Kleenoil MS8 system were permanently installed and allowed to circulate fuel whenever the tank is in use or between fills, it would gradually remove this deep-seated contamination. Each cycle would clean more of the legacy deposits at the base, progressively reducing particle counts even in bottom-of-tank samples. • Long-Term Result: With permanent polishing, the tank would reach stable ISO cleanliness even as it is drained, ensuring clean, dry diesel fuel for engines and eliminating the risk of unexpected filter clogging or injector damage.

Key Technical Explanation