ALMEX, Crepaja︱Nateria MJ 40 Gas Engine Oils

As one of the leaders in the global energy transition, TotalEnergies is actively investing in the development of the biogas sector, with the goal of reducing greenhouse gas emissions and promoting sustainable development. Our ambition is to become a world-class player in the biogas industry through partnerships with innovative, market-leading companies.

Real-world customer experience

What does a successful energy transition look like in practice? Explore how Almex, a leading company in agriculture and renewable energy, achieved significant savings, increased energy independence, and closed the loop of circular economy through strategic investments in biogas plants.

At the core of their operational reliability are TotalEnergies Nateria MJ 40 oils, supported by our expert team providing in-depth oil analysis and predictive maintenance for every gas engine in use.

Reliability of gas engines as the foundation of stable production

Almex operates three biogas plants—two in Mramorak and one at their farm in Crepaja, where a solar power plant has also been installed. The system utilises Jenbacher gas engines, each with a 1 MW capacity, which require continuous operation and proper lubrication to consistently deliver the designed power output.

“Even one hour of downtime can result in losses of several hundred euros,” emphasizes Dušan Dobriković, Director of the Biogas Division at Almex.

The biogas plant in Crepaja uses Nateria MJ 40

Each Jenbacher engine has a 750-liter oil reservoir, along with an additional 250-liter top-up tank that helps maintain pressure and ensure smooth engine operation. Oil changes are scheduled every 2,000 operating hours, but due to high working temperatures and aggressive biogas components, detailed oil analysis is performed every 500 hours at the LubAnac laboratory in Belgium. These analyses are essential for ensuring continuous operation. Based on key indicators—such as base number, acid number, and the presence of metal particles, water, or coolant—experts determine whether the oil change interval can be safely extended.

In addition to obvious savings in oil consumption and maintenance, biogas facilities offer multiple added benefits:

• Efficient use of animal waste from livestock production
• Reduced methane and CO₂ emissions
• Utilization of engine-generated heat to warm farm facilities
• Application of the by-product, post-digestate, as natural fertilizer on fields

For more information about Nateria products and to get in touch with our technical team specializing in industrial gas engine applications, feel free to contact us. With a presence in over 160 countries, TotalEnergies can provide you with the right products formulated to meet the highest OEM standards, along with the technical support you need—whenever you need it.