FUEL CONDITIONING

Keep Stored Diesel Clean, Usable & Ready for Demand

Stored diesel can deteriorate over time, especially when fuel sits unused in standby generator tanks. Water, sludge and contamination can all affect performance, increasing the risk of blocked filters, poor running or generator failure when the system is called into action.

Yorkshire Diesel Power provides fuel polishing and diesel management for standby generator systems across the UK. We help assess stored diesel, deal with contamination where required and support cleaner, more reliable fuel storage for commercial, industrial and critical sites, helping keep backup power systems ready when needed.

fuel polishing

Frequently Asked Questions

Clear answers about stored diesel quality, fuel contamination, tank issues and how cleaner fuel helps support reliable standby generator performance.

Diesel can deteriorate when it sits in a tank for long periods, especially in standby generator systems that do not run regularly. Water, sludge, microbial growth and sediment can build up over time, which can affect fuel quality and create reliability issues when the generator needs to operate.

Warning signs can include blocked filters, poor running, difficult starting, smoke, reduced performance or repeated fuel-related faults. In some cases, contamination may also be visible in the tank or fuel sample, such as water, dark sludge, sediment or a generally poor fuel condition.

Fuel polishing is used to clean stored diesel by helping remove contaminants that can affect generator performance. This may include water, sludge, sediment and debris, all of which can contribute to blocked filters, poor combustion, unreliable running and damage to the generator’s fuel system.

Fuel condition should be checked if a generator has not been used for a long time, if fuel-related faults are suspected, or before important testing and maintenance work. It can also be included as part of a planned diesel management programme for sites that rely on standby power.

Yes. Poor-quality diesel can stop a generator from running correctly, particularly if contamination blocks filters or affects how fuel reaches the engine. In serious cases, contaminated fuel can lead to failed starts, poor performance, shutdowns or generator failure when backup power is needed.

Yes. Fuel polishing can form part of wider diesel management, especially where the tank condition may also be contributing to fuel problems. Where required, Yorkshire Diesel Power can support fuel tank refurbishment requirements alongside fuel condition checks and generator maintenance.

Services, Sales & Hire

Need Diesel Generator Support?

Speak to Yorkshire Diesel Power on 01977 690440 for generator servicing, repairs, sales, hire, load bank testing, fuel polishing or 24-hour emergency call-out support.

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Our Services

Diesel Generator Services for Commercial & Critical Sites

From planned servicing to urgent repairs, Yorkshire Diesel Power supports diesel generator systems across the UK, helping commercial, industrial and public sector sites stay operational.

Generator Sales

Servicing & Repairs

24-Hour Call-Outs

Load Bank Testing

Fuel Polishing

Fire Pump Service

Other Services

Hire, parts, spares, rebuilds, control panels and more

Sectors We Serve

Keeping Critical Sectors Powered Across the UK

From government facilities and NHS sites to logistics companies, data centres and building maintenance providers, YDP supports organisations that depend on reliable standby power to keep essential operations running.

Commercial
Sites

Industrial
Sites

Hotels &
Restaurants

Large Data
Centers

Logistics
Companies

Public
Sector

Ministry
Of Justice

NHS &
Healthcare

Government
Facilities

Why Choose Us?

Trusted Diesel Generator Support When Power Matters

With hands-on experience across older and modern generator sets, Yorkshire Diesel Power delivers practical support for sites that need reliable backup power.

50+ Years Experience

Proven knowledge across diesel generator systems.

Old & Modern Generator Sets

Support for older and newer equipment.

24-Hour Callouts

Nationwide help for urgent generator issues.

Complete Support

Sales, servicing, repairs, hire and parts.

Get in Touch

Need Reliable Diesel Generator Support?

Tell us what you need and the Yorkshire Diesel Power team will get back to you.