Long-Term Storage Places Special Demands on Fuel
While fuel in transportation applications is typically consumed within a short period of time, fuel stored in emergency power systems often remains in tanks for several years.
During this period, aging processes, deposits, and microbial contamination can impair fuel quality. Specialty additives help reduce these risks and preserve critical fuel properties over extended storage periods.
Higher
Operational Reliability
Improved
Storage Stability
Protection of
the Fuel System
Optimized
Engine Performance
What Functions Should a Specialty Additive Provide?
A suitable specialty additive should fulfill several functions simultaneously:
- Increase cetane number
- Improve lubricity
- Stabilize fuel during long-term storage
- Reduce microbiological contamination
- Ensure compatibility with existing fuel inventories
- Prevent corrosion
- Protect against deposits
- Clean the fuel system

Specialty Additives for Emergency Power Systems
For the use of low-sulfur heating oil in emergency power systems, a dedicated performance test was developed based on the TEC4FUELS testing methodology. The objective is the evaluation and certification of additives that improve fuel stability and operational reliability in emergency and backup power systems.
Currently, the specialty additive developed by TEC4FUELS is marketed by ERC Additiv GmbH under the product name NEA Protect Plus. This additive was specifically developed for the requirements of modern emergency power systems and supports reliable operation when storing and using low-sulfur heating oil.
ERC Additiv GmbH is one of Europe’s leading developers and manufacturers of fuel and heating oil additives. The company has many years of experience developing performance-enhancing additive solutions and works closely with industry partners, distributors, and research institutions.
Certified Products
The following products have successfully completed the TEC4FUELS performance test and have been certified (status: February 2, 2026):
- Guard Thermic 3000, Heating oil additive by ERC Additiv GmbH
- Guard Premium Plus 5, Heating oil additive by ERC Additiv GmbH
- ecotherm® futur 4+, Heating oil additive by Innospec Limited NL Germany
Certification confirms successful participation in the TEC4FUELS performance test for use in low-sulfur heating oils and demonstrates suitability for the special requirements of emergency power systems.
FAQ: Key Questions About Additives
When Should an Additive Be Used?
The use of additives is particularly beneficial for fuels that are stored for extended periods in emergency and backup power systems.
Can an Additive Prevent “Diesel Bug” Contamination?
Additives can reduce the risk of microbial contamination, but they do not replace regular fuel quality monitoring and inspections.
Can an Additive Replace Fuel Analysis?
No. Only a professional fuel analysis can provide a reliable assessment of the actual condition and quality of stored fuel.
