Tag: service

Fuel dilution of engine oil: an underestimated problem in petrol and hybrid engines

Posted on by Lotte

Fuel dilution of engine oil: an underestimated problem in petrol and hybrid engines

Modern hybrid engines are more powerful and efficient than ever.

At the same time, stricter emission standards, direct injection, and changed driving patterns create new maintenance challenges. One of the most underestimated of these is fuel dilution of the engine oil.

Many motorists do not notice it immediately, but fuel getting into the engine oil can affect the quality of the oil and contribute to internal contamination of the oil system.

What is fuel dilution?

Fuel dilution occurs when a small amount of unburned gasoline passes the piston rings into the crankcase and mixes with the engine oil.

A limited amount is normal in any internal combustion engine. Problems arise when this process continues to repeat over a prolonged period, causing contamination to accumulate.

The following conditions, in particular, increase the risk of fuel dilution:

  • Frequent short trips
  • Regular cold starts
  • City traffic with frequent stops and starts
  • Prolonged idling
  • Engines with direct injection

Why is this a problem?

Motor oil has several important functions: lubricating, cooling, cleaning, and protecting against wear.

When gasoline mixes with the oil, it can lead to:

  • Reduced lubricating effect
  • Accelerated oil aging
  • Formation of sludge and deposits
  • Contamination of the oil system
  • Increased/accelerated wear of engine parts

Over time, these deposits can accumulate in oil channels, valve trains, and other critical parts of the engine.

Extra attention for hybrid engines

Although fuel dilution can occur in all petrol engines, hybrid vehicles deserve extra attention.

In a hybrid car, the petrol engine is regularly switched on and off. As a result, the engine rarely runs at full operating temperatures.

This can mean that:

  • Moisture evaporates from the oil less quickly
  • Unburned fuel remains in the oil for longer periods
  • Internal contamination builts up more quickly

Precisely for these reasons, preventive servicing of the oil system in hybrid cars is especially important.

Recognizing possible fuel dilution

Fuel dilution is not always immediately visible, but possible signs may include:

  • Rising oil levels
  • Strong gasoline (petrol) smell coming from the oil
  • Dark or heavily contaminated oil
  • More sludge visible under the oil filler cap
  • More frequent oil changes

Oil change by fuel dilution

If contamination is already present in the oil system, Tec4 Oil System Cleaner can be applied prior to an oil change. This product helps loosen deposits and sludge, allowing contamination to be removed along with the old oil during the oil change.

This provides the new engine oil with a cleaner base to function optimally.

Would you like to know more about the importance of a flush before an oil change? Then read this article.

Continuous cleaning with Tec4 Long Life Oil System Cleaner

For long-lasting protection and preventive servicing, Tec4 Long Life Oil System Cleaner offers a different approach. This product is to be added to the (clean) new engine oil and supports continuous cleaning of the lubrication system (oil system) whilst driving. It helps limit new contamination and supports optimal lubrication of the system in between servicing periods.

Especially for vehicles that make many short trips or for hybrid vehicles, this continous cleaning additive can be a valuable addition to your regular oil service.

Preventive service prevents problems

Fuel dilution is not a problem that occurs only in old vehicles. Modern petrol and hybrid engines, in particular, can be affected by it due to their specific operating conditions.

By paying timely attention to the oil system and using the right cleaning products, you prevent contamination from building up unchecked.

Good service does not start only when problems arise, but actually helps prevent them.

Want to know more about engine contamination? Then read this article.

Holiday check: well prepared for a carefree roadtrip

Posted on by Lotte

Holiday check: well prepared for a carefree roadtrip

The summer holidays are the time when cars are put under heavy strain. A fully loaded car, high temperatures, long motorway drives, traffic jams, and sometimes a caravan or trailer demand the utmost from the engine and other vehicle systems.

Yet, in many workshops, a holiday check still consists of inspecting tyres, lighting, and fluids. These are important checks, but modern vehicles deserve a more comprehensive approach.

By paying extra attention to the air conditioning, fuel, and oil systems, you reduce the risk of problems on the road and increase driving comfort during your holiday.

A holiday is a heavy strain on any engine

During a long car journey, an engine often runs for hours on end under high load. Especially in warm countries or mountainous regions, temperatures in the engine compartment rise significantly.

Therefore, preventive maintenance is more important than ever. Not only to prevent breakdowns, but also to ensure that the engine continues to perform optimally throughout the entire trip.

Fresh air starts with a clean air conditioning system

The air conditioning system runs almost continuously during the holidays. Over time, however, bacteria, mold, and other contaminants can accumulate on the evaporator. This can cause musty odors and an unpleasant indoor climate.

With Tec4 Airco Cleaner, the air conditioning system is cleaned effectively and, above all, for a long time. As a result, unwanted odors disappear, allowing the driver and passengers to enjoy fresh air during long journeys.

A clean air conditioner not only increases comfort but also contributes to a more pleasant journey for everyone in the car.

Read more here about the importance of air conditioning cleaning before the holidays.

Check more than just the Oil level

Many motorists check the oil level before departure. That is a good habit, but the condition of the entire oil system is at least as important.

During normal use, deposits and contamination build up in every engine. These can affect lubrication and, over time, reduce engine performance.

Tec4 Long Life Oil System Cleaner supports continuous cleaning of the oil system, even while driving. As a result, the engine remains cleaner internally, lubrication is supported, and contamination can be actively tackled.

For garages, a valuable addition to the standard holiday check!

Also consider the fuel system!

During a holiday, people often refuel at various petrol stations at home and abroad. Additionally, many cars cover significantly more kilometers during this period.

A clean fuel system contributes to optimal combustion and efficient engine operation. A high-quality fuel cleaner helps keep the entire fuel system clean, reduces contamination, and supports optimal engine performance.

Tip: Hybrid cars, in particular, which typically drive primarily on hybrid power but will now also run on petrol for longer journeys, will benefit greatly from this!

After a long holiday trip, it is therefore an excellent time to clean the fuel system preventively.

The complete Tec4 Holiday Check

A modern holiday check consists of more than just a visual inspection.

A complete check includes, among other things:

  • Checking tires, brakes and lights
  • Checking coolant and windshield fluids
  • Checking the oil level and the condition of the oil system
  • Cleaning the air conditioning system with Tec4 Airco Cleaner
  • Preventive cleaning of the fuel system
  • Advice on preventive servicing before and after the holidays

Well prepared for the road

A good holiday starts with a reliable car. By looking beyond standard checkpoints, garages can offer their customers extra peace of mind and reduce the risk of technical problems on the road.

With Tec4 maintenance solutions, workshops have the right products to optimally prepare vehicles for long holiday trips. This way, drivers set off with peace of mind and can enjoy their holiday without a worry.

Would you like to know more about our products or receive advice on putting together a complete holiday check? Please contact our team. We are happy to help!

Why airconditioning cleaning is essential before the summer holidays

Posted on by Lotte

Why airconditioning cleaning is essential before the summer holidays

The summer holidays are just around the corner. Many motorists and camper drivers therefore quickly check tire pressure, oil levels, and coolant. However, one important component is often overlooked: the air conditioning system.

Especially during long holiday drives, a properly functioning air conditioner is indispensable for comfort and a pleasant interior climate. But did you know that a dirty air conditioning system can not only cause unpleasant odors but also affect the air quality in the vehicle?

What happens inside an air conditioning system?

During the use of the air conditioning, condensation (moisture) forms inside the system. Combined with dust, pollen, and other contaminants, this creates an ideal environment for bacteria, molds, and yeasts. These microorganisms can accumulate in the ventilation and air conditioning system, causing the familiar musty smell that many drivers recognize as soon as the air conditioning is switched on.

In addition to unpleasant odors, contamination can also lead to reduced fresh airflow and a decrease in comfort while driving. This becomes noticeable quickly, especially during hot summer days. Want to learn more about this? Click here.

Why air conditioning cleaning is important before departure

A clean air conditioner contributes to:

  • Fresher air in the interior
  • Less chance of musty odors
  • A more pleasant driving experience during long journeys
  • Better air quality for the river and passengers
  • Improve efficiency in the air conditioning system

For vacationers who are on the road for a long time to their destination, this can make a significant difference in comfort.

More than just masking odors

Traditional air conditioning cleaners often focus on removing odors or disinfecting surfaces. However, this is only a temporary solution.

Tec4 Airco Cleaner takes a different approach. The formula combines environmentally friendly cleaning agents, enzumes, and probiotic bacteria. These probiotics not only help remove surface contamination but also target the biofilm that underlies many contamination problems in air conditioning systems.

When is an air conditioning cleaning necessary?

An air conditioning cleaning is certainly recommended when:

  • A musty or unpleasant odor comes from the ventilation
  • The vehicle has not been used intensively for a long time
  • The holiday season is approaching and the system will be used frequently again
  • It has been more than a year since the air conditioning system was cleaned

Tec4 recommends cleaning the air conditioning system at least once a year to maintain optimal air quality and system performance.

Ready for a fresh start to your holiday?

A holiday doesn’t start at the destination, but as soon as you step inside. By paying attention to the air conditioning system before departure, you ensure a comfortable journey and a more pleasant interior climate for all occupants.

A minor service can therefore make a big difference during your holiday journey.

Good Camper (RV) service starts from within: why fuel cleaners are essential

Posted on by Lotte

Good Camper (RV) service starts from within: why fuel cleaners are essential

Your Camper (RV) guarantees freedom, adventure, and comfort—but it needs to remain reliable. Whether you travel once a year or are on the road regularly, good service is crucial for a carefree holiday.

At Tec4, we know that a shiny exterior is worthless without a well-functioning engine. And one of the most underestimated, yet oh-so-important, parts of Camper (RV) service? That’s the fuel system. Fortunately, there’s a simple and effective solution: Tec4 fuel system cleaners.

Why does a Camper (RV) need extra attention?

A camper (RV) often sits idle for long periods, travels relatively few kilometers, and frequently drives short distances with heavy loads.

These conditions can cause:

  • Contamination in/on injectors, valves, and combustion chambers;
  • Crystallization of AdBlue fluid (SCR system);
  • Reduced combustion efficiency;
  • Higher fuel consumption and poorer performance;
  • Soot buildup and elevated emissions;
  • Increased risk of malfunctions and expensive repairs.

The solution: Tec4 Fuel System Cleaners

With Tec4 fuel system cleaners, you can clean the fuel system from the inside out, without disassembly. Our products are specifically designed to:

  • Clean injectors and restore the spray pattern;
  • Remove carbon deposits on valves and pistons;
  • Lubricate and protect the fuel pump and injectors;
  • Reduce soot formation and exhaust fouling;
  • Dissolve crystallization and deposits in the SCR injector;
  • Optimize the performance, fuel consumption, and lifespan of your engine.

When to use fuel system cleaners for your Camper (RV)

  • Before and after the season: Use a cleaner before your first trip and at the end of the season before it goes back into storage.
  • After long trips or refueling abroad: Fuel quality varies by country. A fuel system cleaner prevents damage from contaminated or lower-quality fuel.
  • In case of irregular running, smoke, or loss of power: These are often signs of contaminated injectors or valves.
  • Combine this with a fuel filter replacement and you will significantly extend the lifespan of your camper.

Travel prepared – care for your camper with Tec4.

A well-maintained camper is not only safer and more fuel-efficient, but also prevents unexpected (and expensive) mechanical problems during your vacation. With Tec4 fuel system cleaners, you can keep your camper clean from the inside out—exactly where it counts.

Contact us to find the nearest workshop.

FAQ – Air Conditioning Cleaning in Electric Vehicles (EVs)

Posted on by Lotte

FAQ – Air Conditioning Cleaning in Electric Vehicles (EVs)

Unlike traditional vehicles, the air conditioning system in electric vehicles (EVs) performs a crucial technical function. In addition to cabin cooling, it plays a key role in the thermal management of the battery and power electronics. Regular air conditioning cleaning/service is therefore essential for maintaining range, efficiency, and service life.

Functioning of the air conditioning system in EVs and hybrid cars.

In modern electric and hybrid vehicles, the HVAC (Heating, Ventilation, and Air Conditioning) system is closely linked to thermal management. It helps keep the temperature of critical components, including the battery pack and power electronics, within safe and efficient limits.

This system regulates the temperature of the battery pack, which functions optimally within a limited temperature range. If the temperature rises too high, it can lead to accelerated wear, reduced performance, and in extreme cases, permanent damage.

Poorly functioning air conditioning can also reduce the vehicle’s efficiency. When the system has to work harder due to a lack of refrigerant or contaminated components, it consumes more energy. In electric vehicles, this directly results in a reduced range per charge.

A stable temperature is essential because:

  • high temperatures accelerate battery degradation
  • inefficient cooling can lead to power loss
  • thermal stress shortens the life of battery components

An optimally functioning air conditioning system helps to mitigate these risks and supports overall vehicle performance.

Contamination reduces efficiency and increases energy consumption

During operation, bacteria, mold, dust, and organic contamination accumulate in the evaporator and ventilation ducts of the air conditioning system. This contamination forms an insulating layer that reduces heat transfer. As a result, the electric compressor has to work harder to deliver the same cooling performance.

For electric vehicles, this has direct consequences:

  • higher energy consumption of the HVAC system;
  • noticeable reduction in range;
  • increased load on the compressor and components;
  • less efficient temperature control of the battery and electronics

Even small efficiency losses in electric vehicles can have a measurable effect on driving performance and energy consumption.

Preventative cleaning/service prevents wear and expensive repairs

Preventative cleaning of the air conditioning system helps remove contamination and restore optimal operation. This results in:

  • optimal heat transfer in the evaporator;
  • more efficient operation of the electric compressor;
  • stable performance of thermal management systems;
  • extended lifespan of HVAC components;
  • maintenance of maximum energy efficiency.

In addition, a clean air conditioning system improves cabin air quality and prevents odor formation.

Air conditioning service/cleaning essential part of EV service

With the continued electrification of the vehicle fleet, it’s becoming clear that air conditioning service plays a crucial role in the technical reliability of electric and hybrid vehicles. Regular cleaning helps minimize energy loss, protects critical components, and supports optimal vehicle performance.

Through preventative service with solutions like Tec4 Airco Cleaner, workshops and vehicle owners can contribute to a longer lifespan, higher efficiency, and maximum performance of electric vehicles.

Want to learn more about how Tec4 Airco Cleaner works? Click here.

FAQ – The effects of Probiotics in Tec4 Airco Cleaner

Posted on by Lotte

FAQ – The effects of Probiotics in Tec4 Airco Cleaner

While chemical air conditioning cleaners simply remove/disinfect surface contamination, Tec4 Airco Cleaner works differently. In this article, we explain why it’s necessary to clean the air conditioning system and how Tec4 Airco Cleaner provides long-lasting cleaning for your air conditioning system, contributing to a healthy environment in your vehicle.

1. Why should your air conditioning be cleaned?

There are three important reasons to keep your air conditioning system clean:

1. Health:

Moisture, dust and dirt accumulate in the air conditioning system. This is an ideal breeding ground for bacteria, mold and yeast. These can;

  • cause a musty or foul odor;
  • cause symptoms such as coughing, sneezing, irritated eyes or headaches;
  • cause additionial problems for people with ashtma or allergies.

2. Air quality and comfort:

A contaminated/dirty airconditioning system:

  • spreads unpleasant odors throughout the interior;
  • blows less fresh air and less cool air;
  • makes driving less comfortable especially in warm weather.

3. Improved airconditioning performance:

Contamination in the system causes:

  • the airconditioning to work harder to cool;
  • reduces cooling capacity;
  • accelerates wear and tear on parts.

A clean airconditioning system works more efficiently and cools faster.

2. How does a chemical airconditioning cleaner work?

A chemical air conditioning cleaner is often biocide-based. This air conditioning cleaner essentially does only one thing: remove all surface contamination.

3. Why is a chemical airconditioning cleaner not effective?

Every contamination begins with microbiological contamination, also called biofilm. This is invisible contamination, which can harbor visible contamination. Every surface is covered with a biofilm. This is an ideal environment for unwanted bacteria and fungi.

The biofilm acts as a protective layer for the bacteria and fungi against the outside world. As a result, bacteria and fungi hiding in the biofilm are not affected by disinfection. Chemical products do not remove the biofilm; they only remove the surface contamination. This causes contamination to reappear immediately after cleaning.

Cleaning with a chemical airconditioning cleaner is therefore only short-lived.

4. How does Tec4 Airco Cleaner work?

Tec4 Airco Cleaner uses a combination of environmentally friendly cleaning agents, enzymes, and probiotic bacteria to remove surface dirt and biofilm. The probiotic bacteria occupy space on the surface and search for and consume the food (i.e., dirt) found there.
Thanks to the in-situ production of enzymes, Tec4 Airco Cleaner ensures deep and thorough surface and microscopic cleaning. And there’s no more food for pathogenic bacteria.

Meaning, the environment in the car gets restored long term.

5. When should you clean your airconditioning system?

The airconditioning system of your vehicle should be cleaned atleast once a year. Or earlier in case of odours or other symptoms.

FAQ – LSPI (Low-Speed Pre-Ignition)

Posted on by Lotte

1. What is LSPI?

LSPI stands for Low-Speed Pre-Ignition. It is an uncontrolled ignition of the air-fuel mixture before the spark plug fires. LSPI mainly occurs in modern turbocharged, gasoline direct-injection engines under low engine speed and high load conditions.

2. When does LSPI typically occur?

LSPI usually occurs during:

  • Acceleration at low RPM in a high gear
  • High engine load combined with turbo boost
  • Low-speed driving with sudden throttle input

3. Why is LSPI dangerous?

LSPI causes extremely high and sudden pressure peaks in the combustion chamber. These pressure spikes can lead to:

  • Cracked or damaged pistons
  • Broken piston rings
  • Damage to cylinder walls
  • Severe engine damage in extreme cases

4. What causes LSPI?

LSPI is caused by a combination of factors, including:

  • Fuel quality and octane rating
  • Ethanol-blended fuels
  • Engine oil composition and additive chemistry
  • Carbon deposits in the combustion chamber
  • High compression ratios and turbocharging

5. Does ethanol increase the risk of LSPI?

Ethanol itself is not the direct cause, but ethanol-blended fuels can influence combustion behavior and deposit formation, which may increase LSPI sensitivity under certain operating conditions.

6. Does engine oil play a role in LSPI?

Yes. Engine oil chemistry is a critical factor. Certain oil additives and degraded oil can increase the risk of LSPI. Modern engines require oils specifically formulated to reduce LSPI events.

7. How can LSPI be prevented?

LSPI risk can be reduced by:

  • Using high-quality engine oil with LSPI protection
  • Changing oil at correct service intervals
  • Avoiding high load at very low RPM
  • Using fuel with sufficient octane rating
  • Keeping the engine and fuel system clean
  • Using Tec4 Long Life Oil System Cleaner

FAQ – SCR Systems and Tec4 Ad-Blue Clean & Protect

Posted on by Lotte

FAQ – SCR Systems and Tec4 Ad-Blue Clean & Protect

Tec4 has launched a comprehensive FAQ page covering SCR systems and Ad-Blue service, designed specifically for professional workshops and fleet operators. Learn about common issues such as crystallization, injector contamination, and reduced SCR efficiency, and discover how Tec4 Ad-Blue Clean & Protect effectively prevents these problems while keeping the system performing at its best.

1. What is an SCR system and how does it work?
A Selective Catalytic Reduction (SCR) system is an emissions control technology used in diesel vehicles to reduce NOx emissions. The system injects Ad-Blue (urea solution) into the exhaust stream, which reacts in the catalyst to convert harmful nitrogen oxides into harmless nitrogen and water vapor.

2. Why do SCR system problems occur?
Common issues include:

  • Ad-Blue crystallization: evaporation or chemical reactions can form crystals that block the system.
  • Injector contamination: deposits on the Ad-Blue injector reduce spray efficiency.
  • Reduced SCR efficiency: clogged or contaminated systems can lead to higher NOx emissions and engine power loss.
  • Freezing issues: Ad-Blue can freeze in low temperatures, temporarily disabling the system.

3. How can SCR system problems be detected?
Signs include:

  • Increased NOx emissions or fault codes from the vehicle diagnostic system
  • Reduced engine performance or irregular operation
  • Ad-Blue or SCR system warning lights
  • Visible crystal formation or residue on the injector or in the system

4. How does Tec4 Ad-Blue Clean & Protect help?
Tec4 Ad-Blue Clean & Protect provides a complete SCR service solution:

  • Breaks down existing crystals in injectors and lines
  • Prevents new crystallization by stabilizing Ad-Blue fluid
  • Cleans the Ad-Blue injector, ensuring optimal spray efficiency
  • Lowers the freezing point of Ad-Blue to -20°C, improving reliability in cold conditions
  • Restores SCR efficiency, reducing NOx emissions and preventing power loss

5. When should Tec4 Ad-Blue Clean & Protect be used?

  • Preventive service: add with every Ad-Blue refill to prevent crystallization and contamination
  • Corrective service: treat systems showing existing crystallization or injector blockages

6. Is the product safe for all diesel vehicles with SCR systems?
Yes, it is suitable for all vehicles with SCR systems, including trucks, campervans, buses, commercial vehicles, and modern diesel cars.

7. Does Tec4 Ad-Blue Clean & Protect prevent emissions and engine issues?
Yes. By keeping the SCR system clean and Ad-Blue fluid stable, the additive ensures optimal emission reduction, reduces fault codes and power loss, and helps avoid costly repairs.

8. How does this benefit workshops and fleet operators?
Regular use provides:

  • Fewer SCR system failures and reduced vehicle downtime
  • Lower service costs
  • Improved emission compliance
  • Extended service life of SCR components and injectors