A standby diesel generator may be idle most of the time. But when utility power fails, it needs to transition immediately to a reliable source of continuous power. That makes the condition of the fuel and coolant to operate it, critical to emergency preparedness.
Stored diesel fuel is not static. Over time, exposure to moisture, temperature fluctuations, and microbial activity can alter fuel quality. Oxidation can contribute to sediment and degradation products, while water can create conditions favorable to microbial growth. When degraded or contaminated fuel reaches the generator, this may cause: restricted filters, injector deposits, poor combustion or difficulty starting precisely when dependable operation matters most.
Coolant presents a different but equally critical reliability challenge. Beyond heat transfer, a well-maintained coolant system also protects internal components against corrosion, cavitation, scale formation, and other degradation mechanisms. Changes in inhibitor chemistry, contamination, pH or glycol concentration can gradually reduce that protection without any warning signs.
Laboratory testing provides insight into conditions that routine visual inspections may miss. A comprehensive fluid-monitoring program can evaluate:
- Fuel quality, degradation and contamination
- Water and sediment in stored diesel
- Evidence of microbial activity
- Coolant freeze and boil protection
- pH and corrosion-inhibitor condition
- Contaminants and indicators of cooling-system deterioration
Consistent monitoring can reveal developing changes, support maintenance decisions, and determine when corrective action is warranted.
For facilities where backup power supports critical operations, a proactive fuel and coolant testing program through Eurofins TestOil provides the analytical data needed to manage fluid condition as part of a broader generator reliability strategy.
To schedule Fuel Testing and/or Coolant Testing visit https://testoil.com/trustplus-oil-analysis/start-testing-now/; call 216-251-2510; or email testoil-sales@et.eurofinsus.com.
With more than 30 years of experience in the oil analysis industry, Eurofins TestOil focuses exclusively on assisting industrial facilities with reducing maintenance costs and avoiding unexpected downtime through oil and fuel analysis program implementation. As industry experts in diagnosing oil-related issues in equipment such as turbines, hydraulics, gearboxes, pumps, compressors and diesel generators, Eurofins TestOil provides customers with same-day turnaround on routine oil analysis testing.
About Eurofins – the global leader in bio-analysis
Eurofins is Testing for Life. Eurofins is the global leader in food, environment, pharmaceutical and cosmetic product testing, and in discovery pharmacology, forensics, advanced material sciences and agroscience Contract Research services. Eurofins is also a market leader in certain testing and laboratory services for genomics, and in the support of clinical studies, as well as in BioPharma Contract Development and Manufacturing. The Group also has a rapidly developing presence in highly specialised and molecular clinical diagnostic testing and in-vitro diagnostic products.
With over 61,000 staff across a network of 940 laboratories in 59 countries, Eurofins’ companies offer a portfolio of over 200,000 analytical methods. Eurofins Shares are listed on Euronext Paris Stock Exchange.
