DARRINGTON - BULK DIESEL STORAGE TANK

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.

Benefits to the Quarry Operation

• Protects injection equipment — ISO counts reduced to safe levels, extending injector and pump life. • Moisture controlled — water reduced to 17 ppm, minimising corrosion and microbial growth risk. • Fuel stability — sulphur level now at the ideal 11 ppm range, ensuring lubricity without emissions penalties. • Operational reliability — cleaner diesel prevents unplanned downtime from blocked filters or injection failures.

Next Steps

• Awaiting the next sample — expected to show further improvement in particle counts as the MS4 system continues to polish the fuel. • ISO is expected to trend towards 17/15/12 or better, providing world-class diesel cleanliness. • Regular monitoring will confirm long-term stability and identify any future contamination early.

Conclusion: Within one week, the Kleenoil MS4 system has transformed fuel quality: from too dirty to count to ISO 19/18/15, water reduced by 70%, and sulphur stabilised at the ideal 11 ppm level for lubricity and emissions. This ensures reliable, efficient fuel supply and protects critical quarrying equipment.

• First sample: dangerously dirty — unacceptable for modern diesel engines. • Second sample: transformed by the Kleenoil MS8 to near-target ISO and drier fuel. • Third sample: shows some older contamination being drawn up as fuel level fell — not a step back, but evidence that permanent on-site filtration would continue improving the tank until even bottom fuel is clean.