Developed and made in Bavaria

Additives for petrol, diesel and engine oil

Find the right product for your fuel system, oil change and engine care.
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Red motorcycle fuel tank with closed filler cap

Seasonal advice · Motorcycles

Getting your motorcycle ready for the winter break

As the riding season comes to an end, take care of the fuel system before storing your motorcycle. EUROSOL Petrol System is intended for fuel system maintenance. Follow the product instructions and your motorcycle manufacturer's storage guidance.

5.072 Google reviews(Competitor average: 4.47)
FILL X CLEAN

An application system for cleaning fuel lines and engines

FILL X CLEAN

Choose the right treatment for the fuel system and engine.

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Public product reviews

What customers say about our products

72 reviews on Google, plus further customer feedback on our products.

Illustrative photo of maintenance work in an open engine bay
DS · Diesel System
“Always happy with this product.”
Translated from German

★★★★★ 5 out of 5 stars

Online marketplace customer · Source

EUROSOL High Performance Oil Additive in use
HO (oil additive)
“I have been using the product for 20 years … and have been a big EUROSOL fan ever since.”
Translated from German

★★★★★ 5 out of 5 stars

L. W.

Illustrative photo of a workbench in a vehicle repair shop
DS · Diesel System
“Communication, shipping and packaging were already excellent.”
Translated from German

★★★★★ 5 out of 5 stars

A. K.

Illustrative photo of private vehicle maintenance in an open engine bay
BS · Petrol System
“Perfect value for money and service.”
Translated from German

★★★★★ 5 out of 5 stars

A. K.

Motorcycle fuel tank with cap, illustrative image for winter motorcycle storage
BS · Petrol System
“Highly recommended for a motorcycle during the winter break.”
Translated from German

★★★★★ 5 out of 5 stars

Online marketplace customer · Source

Pouring EUROSOL Oil System Engine Flush into the engine
OS (engine flush)
“It was recommended to me, and it is great.”
Translated from German

★★★★★ 5 out of 5 stars

Online marketplace customer · Source

The images show product applications and illustrative scenes; people shown are not the authors of the reviews.

EUROSOL · KNOWLEDGE AND CARE

If you want to do more for your engine: start with the right maintenance routine.

Targeted cleaning for the engine and fuel system. Care that fits your maintenance routine.

We believe everyone can take practical steps towards economical driving, reliable machinery and vehicle value retention.

EUROSOL combines practical workshop experience and development with additives and system cleaners for diesel, petrol and engine oil.

01 · MINDFUL FUEL USE

Efficient on the road.

Drive with anticipation, check tyre pressures and avoid unnecessary load: good habits start with every journey.

02 · PROPER MECHANICAL CARE

Act early.

Follow service intervals, understand deposits and choose suitable care. Have unusual symptoms checked promptly by a specialist.

03 · FOCUS ON VALUE RETENTION

Keep clear maintenance records.

Document service history, oil changes and repairs. This keeps vehicle condition transparent for future resale.

Do it right yourself.

Find the right care →Explore workshop knowledge →
Helmut Ohnheiser alone in the EUROSOL workshop

From workshop experience to in house development.

Because Helmut Ohnheiser could not find a solution that met his professional standards for his own vehicle and those of his workshop customers, he began developing his own thorough cleaning solutions for fuel lines and engines.

Built on technical curiosity, years of hands on experience and genuine dedication to engines: EUROSOL.

EUROSOL is made for anyone who wants to maintain engines and machinery reliably and preserve their value over time.

Premium is not our target audience, but our standard for development, products and advice. That is precisely the standard we deliver for our customers.

I am driven by the desire to solve technical problems at their source. When engines stay cleaner and components remain usable for longer, people, technology and the environment benefit.

Helmut Ohnheiser, founder of EUROSOL
Translated from German More about EUROSOL

Engine care for work and everyday use

Find the EUROSOL additive for your vehicle or machine.

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Diesel Petrol Before changing the oilOS (Oil System Engine Flush) After changing the oilHO (High Performance Oil Additive)
Gloved hands during maintenance work in the engine bay Car Red motorcycle fuel tank with filler cap Motorbikes & Trikes Maintenance work on the petrol engine of a lawnmower Garden equipment Maintenance work on the hydraulics of a yellow plant machine Construction machinery Mechanic carrying out maintenance work on a tractor Agricultural Machinery & Tractors Motorboat with outboard motor running on water Marine, yacht and boat engines

Products, guidance and practical advice

  •  

    A product for each maintenance task

    Our range covers the fuel system, engine flushing and oil additives. Choose the product for the job and follow the application instructions.

    View all products
  •  

    EUROSOL in use

    Our FAQs explain how to use the four additives and what to check before you start.

    Read the FAQs
  • Helmut Ohnheiser mit EUROSOL Diesel-System im Produktlager
     

    Advice for business customers

    We help workshops, retailers and fleet operators choose products and use them correctly.

    Business customers
  • The four EUROSOL additives with Made in Germany neck tags
     

    Find the right product

    Use the product guide to match the additive to your engine and maintenance task.

    Open the product guide

Frequently asked questions

When should I use each EUROSOL additive?

Add Petrol System to the petrol tank before filling up and Diesel System to the diesel tank before filling up. Use Oil System Engine Flush with the old engine oil before the scheduled oil and filter change. Add High Performance Oil Additive to the fresh engine oil afterwards, using the correct dose for the oil capacity. Follow the product instructions and the vehicle manufacturer's guidance.
Which products are intended for diesel engines?

Diesel System is the fuel additive for diesel engines. Oil System Engine Flush is used before an oil change, and High Performance Oil Additive is added to fresh engine oil afterwards. Check the instructions for each product and your vehicle before use.
Which products are intended for petrol engines?

Petrol System is the fuel additive for petrol engines. Oil System Engine Flush is used before an oil change, and High Performance Oil Additive is added to fresh engine oil afterwards. Check the instructions for each product and your vehicle before use.
Can I use the additives with catalytic converters and particulate filters?

The product descriptions explain the intended applications for catalytic converters and particulate filters. Check the instructions for your chosen additive and follow your vehicle manufacturer's guidance.
How often should I use the additives?

Use Oil System Engine Flush before an oil change and High Performance Oil Additive with the fresh engine oil afterwards. Use Petrol System or Diesel System every three months and after extended periods of downtime, as well as at scheduled workshop service intervals. Follow the dosage instructions and keep the vehicle manufacturer's service schedule.

Need more information?

Read the full FAQs for advice on product choice and application.

Read all FAQs