At Stuart Energy, some of the most common issues we encounter are low oil levels, low coolant, and fuel shortages. While diesel generators are built to be reliable and robust, they still require basic daily monitoring to operate safely and efficiently.
Why Daily Generator Checks Matter
A generator is often the heart of a construction site, infrastructure project, or temporary power installation. When it stops working unexpectedly, the impact can be significant.
A breakdown can lead to:
- Site downtime
- Delayed project schedules
- Lost productivity
- Increased costs
- Emergency engineer callouts

Many of these issues can be avoided by carrying out routine inspections.
Oil Levels: Protecting Your Engine
Engine oil plays a vital role in lubricating moving parts and preventing excessive wear.
If oil levels become too low, the engine can overheat, suffer internal damage, or automatically shut down to protect itself. In severe cases, low oil can result in costly repairs and extended downtime.
Coolant Levels: Preventing Overheating
Coolant helps regulate engine temperature during operation.
Low coolant levels can cause the generator to overheat, triggering alarms, shutdowns, and potential engine damage. This is particularly important during periods of heavy demand or warm weather when generators are working harder.
A quick visual inspection each day can help ensure coolant levels remain within the recommended range.
Fuel Levels: Don’t Get Caught
Running out of fuel is one of the simplest breakdown causes to avoid, yet it remains a common reason for site power interruptions.
Monitoring fuel levels regularly ensures your generator can continue operating without interruption and helps avoid emergency refuelling situations.
At Stuart Energy, we understand that site teams have enough to manage without constantly worrying about fuel levels. That is why we offer a comprehensive fuel management service, helping customers keep their generators fuelled, monitored, and ready to perform when needed.
Our fuel management solutions can reduce the risk of unexpected outages and help maintain continuous power across your site.
The Hirer’s Responsibility
When hiring a diesel generator, it is important to understand that routine daily checks of oil, coolant, and fuel levels are the responsibility of the hirer.
These simple inspections form part of good site practice and help ensure the equipment continues to operate safely and efficiently throughout the hire period.
A Daily Reminder from Stuart Energy
To help our customers stay on top of these essential checks, Stuart Energy has placed reminder stickers on all our generators.
These stickers serve as a simple prompt for site teams to check oil, coolant, and fuel levels every day before operation.
It is a small step that can make a big difference in preventing avoidable breakdowns and keeping projects running smoothly.

Keep Your Site Powered Without Disruption
Preventative maintenance is always easier, and less expensive than dealing with an unexpected breakdown.
By taking a few minutes each day to check oil, coolant, and fuel levels, site teams can significantly reduce the risk of generator failure and avoid costly interruptions.
If you would like to learn more about our generator hire services or discuss how our fuel management solutions can support your project, get in touch with the Stuart Energy team today.