DARRINGTON - BULK DIESEL STORAGE TANK

Bulk Diesel Storage Tank – Oil Analysis Results

Location: Quarrying Operation System: Kleenoil MS4 Diesel Filtration Unit (installed July 2025)

Sample History

17/07/25 – Before Kleenoil (Start Sample)

• Particle count: Too dirty to measure. Counter overloaded — extremely high contamination. • Appearance: Clear and bright, but visible metallic particles present. • Water: 56 ppm (elevated). • Metals: Iron 2, Ca 2, P 2, Zn 4. • Sulphur: 64 ppm. • Bacteria/Fungus: Negative. • Interpretation: Fuel appeared clear but was heavily contaminated with fine solids and water. This condition risks injector wear, microbial growth, and poor combustion efficiency.

24/07/25 – After 7 Days with Kleenoil MS4 System

Particle count: o

•

14 µm: 225/ml 6 µm: 1,651/ml 4 µm: 4,774/ml

o

o

o ISO Code: 19/18/15 (measurable and much cleaner than “too dirty to count”) • Appearance: Clear and bright, no visible debris. • Water: 17 ppm (↓ from 56). • Metals/Chemistry: All 0 (clean fuel). • Sulphur: 11 ppm (↓ from 64). • Interpretation: Major improvement. Water and solids significantly reduced, fuel chemistry stabilised.

Sulphur Context

• The Kleenoil MS4 system does not remove sulphur from the fuel itself. • The reduction (64 → 11 ppm) is because much of the sulphur was bound in sludge/particulates that were physically removed from the tank during filtration. • Importantly, a desirable sulphur level is around 11 – 15 ppm: o This maintains fuel lubricity for pumps and injectors. o It avoids excessive sulphur that could cause emissions issues. • The current result of 11 ppm is ideal, ensuring the diesel remains both protective and compliant.