Based in Ebeltoft, Denmark, GreenOil Standard combines Danish quality, maritime tradition, and sustainable innovation to deliver forward-thinking oil filtration solutions. For over 15 years, we have been delivering unmatched expertise in designing, developing, and manufacturing exclusive filtration systems for hydraulics, diesel, marine gas oil, and lubrication oil — tailored to meet the exact needs of each customer.
Recognized worldwide as a trusted partner and reliable manufacturer, we take immense pride in our reputation. We are relentless in our pursuit of excellence, constantly improving our products and services to uphold our strong brand identity and ensure our solutions withstand the test of time—even in the harshest conditions.
Performance to Rely On — this is our promise, the core of everything we do. It drives every process, every decision, and every innovation. With GreenOil, you’re guaranteed the highest standard of oil filtration that keeps your operations running smoothly and efficiently.
At GreenOil, oil filtration isn’t just our specialty — it’s our passion. There’s nothing more satisfying than seeing a crystal-clear oil sample. And even more rewarding is sharing that moment with our customers — knowing we’ve delivered the best possible solution for their exact application, whether on sea or on land.
We aim to be your trusted partner in all aspects of oil maintenance, offering solutions that are environmentally responsible, easy to maintain, and economically sound.
Environmentally conscious – We use surplus sheep wool as a key filtration material, delivering long-lasting results while reducing environmental impact. It’s a small step with a big effect on your footprint — and a greener future.
Effortless maintenance – Our systems are designed for simplicity: no special skills required, no complex spare parts logistics, and quick, tool-free servicing. That means fewer delays and happier crews or operators.
Economically beneficial – GreenOil solutions deliver a fast return on investment by extending oil and equipment life, lowering maintenance costs, and reducing downtime. Cost efficiency has been at the core of our design philosophy from day one.
Because in today’s world, clean oil is not a luxury — it’s essential. A reliable filtration system safeguards your machinery and ensures continuous, efficient operation. With decades of hands-on industry experience, we understand the challenges our customers face and develop tailored solutions that prioritize both functionality and long-term performance.
We work in close collaboration with our customers — listening, advising, and refining — to ensure every system is perfectly matched to their needs. For us, that’s the key to success: open communication, smart design, and a shared commitment to cleaner, more reliable oil systems.
After all, building a better, more sustainable future starts with one simple principle:
Proper oil filtration.
GreenOil Standard began with a single visionary: Lars Brejnbjerg, a lifelong advocate for green and sustainable technologies. In the 1980s, Lars was part of the pioneering team behind the Mini-el – known in Denmark as the “Ellert” – one of the world’s first small electric cars. Later, he was recruited by a local company to develop a more sustainable approach to oil maintenance.
As Lars explored the market, he quickly discovered a critical gap: no existing solution effectively removed water from oil without compromising quality or efficiency. Determined to change that, he set out to develop the ideal system from the ground up.
He began with particle filtration, using natural sheep wool, chosen for its exceptional particle retention and robust fiber structure. Then came his breakthrough in water separation: by applying indirect heating to the oil surface, he could transfer heat to the water contamination far more efficiently than traditional direct-heating methods. Early prototypes used a repurposed kitchen kettle element, but results were remarkable — the method proved to be more than 10 times as effective as known evaporation systems.
With successful field tests and patented principles in place, local investors saw the potential. In 2008, GreenOil Standard was founded with the ambition to bring this innovation to a global market.
Today, GreenOil’s offline oil filtration systems are installed on thousands of vessels and used across industries on every continent. While we serve a broad range of sectors, the marine industry remains at our core — and we take great pride in knowing that every time a vessel docks with a GreenOil system onboard, we’ve helped ensure its journey was cleaner, safer, and more reliable.
Our passion for clean oil drives us forward. Through continuous research and development, we refine existing solutions and bring new technologies to life — always with the goal of helping our customers improve performance, reduce environmental impact, and extend equipment life.
At GreenOil, we believe that close collaboration and long-term partnerships are the key to progress. For every ship that arrives safely, every system that reduces waste, and every customer we support, we see not just a success — but a step toward a more sustainable future.
GreenOil Standard represents state-of-the-art technology in offline oil filtration — delivering clean, dry oil to ensure your machinery runs reliably throughout its entire lifetime. With low power consumption and filtration based on natural, eco-friendly materials like compressed sheep wool, GreenOil offers one of the most sustainable and efficient systems on the market. Our patented, maintenance-free water separation technology has been thoroughly tested and is recognized for its outstanding performance across industries.
It’s widely known that clean oil is critical to the operation of any machine. In fact, oil contamination is responsible for up to 80% of oil system failures. Particles and water degrade oil quality, leading to wear, damage, unplanned breakdowns, and costly downtime. Protecting your system starts with effective filtration — and with GreenOil, you gain reliability, durability, and peace of mind.
Proper oil maintenance not only extends equipment life — it also reduces lifecycle costs and ensures consistent operational performance. GreenOil systems are easy to install and maintain, requiring no spare parts storage and minimal crew involvement. And because they operate offline, you save valuable space and reduce the risk of contamination during engine operation.
With GreenOil, you’re choosing a solution that’s efficient, economical, environmentally responsible — and above all, performance you can rely on.
Thousands of GreenOil filtration systems are installed across the world fleet. It is very essential for efficient particle filtering – primarily because oil systems include sensitive components and operate at very small tolerances.
We are passionate about what we do best — oil filtration solutions — and remain focused on delivering the most optimized solutions to our customers.
Erhvervsparken 10
8400 Ebeltoft
Denmark
