Blogs

Fuel system and emissions

How to Fix High Fuel Consumption

Find out why your car may be using too much fuel, how to calculate real fuel consumption and how fuel system cleaners can help restore smoother performance.

Fuel system and emissions

New soot test for the MOT: everything you need to know about the particle test

Learn how the new MOT particle test works, why diesel cars can fail it and what steps may help reduce soot emissions before inspection.

Fuel system and emissions

DPF clogged? Here’s how you can clean it yourself

Is it possible to clean a clogged particulate filter yourself? That is a question we often get. If a particulate filter is clogged, in many cases you can sol...

Fuel system and emissions

Solve your car’s jerking or hesitation immediately

The irregular running of the engine has many names. You will also occasionally come across a different name on this page. Stuttering, holding back, jerking, ...

Discover the most common AdBlue problems, warning signs and causes, plus practical solutions to prevent crystallisation, sensor faults and expensive SCR syst...

Learn how a dirty O2 sensor affects fuel consumption, emissions and engine performance, and how a petrol additive may help clean the exhaust system.

Find out what SCR crystallisation is, how AdBlue deposits can block the system and how proper maintenance or additives can help prevent costly repairs.

Find out what to do when the engine management light comes on, which basic checks to perform and when professional diagnosis is needed.

Fuel system and emissions

Clean a clogged EGR valve yourself

An EGR valve that becomes clogged is a common occurrence. Fortunately, in many cases you can clean an EGR valve yourself. In this blog we discuss, among othe...

Fuel system and emissions

E10 petrol problems and solutions

Since October 1, 2019, Dutch gas stations have been required to offer E10 gasoline. At the moment, E5 petrol is hardly offered, so you are almost obliged to ...

Find out how a defective turbo can affect DPF operation, increase soot emissions and why regular cleaning of the diesel system may help prevent issues.

Find out how soot build-up affects a diesel particulate filter, why particle emissions matter and how regular DPF maintenance can help prevent problems.

Find out what the Abgas Werkstatt warning means, which injection or emissions issues may cause it and when a fuel additive may help.

Learn what causes diesel particulate filter problems, why removing a DPF is risky and how cleaning or additives may help reduce common DPF-related issues.

Erfahren Sie, wie ein verstopfter Dieselpartikelfilter den Abgasdruck erhöhen und möglicherweise den Turbolader beschädigen kann und wie die richtige Dieselw...

Erfahren Sie, ob Sie ohne Dieselpartikelfilter fahren können, welche Probleme dadurch entstehen können und warum ein verstopfter DPF rechtzeitig gereinigt od...

Learn what causes a cylinder misfire, how to recognise the symptoms and when injector cleaner or further diagnosis may help restore smooth engine performance.

Recognise the symptoms of dirty injectors, such as rough running, higher fuel consumption and power loss, and learn how fuel additives can help clean the sys...

Find out how to improve fuel quality, why poor diesel or petrol quality can reduce performance and how additives can support cleaner, better-lubricated fuel ...

Learn how moisture in B7 diesel can lead to bacterial growth, clogged filters and corrosion, and how proper storage and Diesel Boost can help prevent issues.

Find out what causes intake contamination, how a dirty EGR valve affects performance and how diesel or petrol additives can help clean the intake system.

Jedes Auto hat eine Abgasanlage. Die Abgasanlage ist ein Teil des Verbrennungsmotors und leitet Abgase nach außen. In fast allen Fällen ist der Abgasrauch fa...

Haben Sie beim Beschleunigen oder Bergauffahren mit Ihrem Auto schon einmal ein seltsames, klapperndes Geräusch gehört? Das könnte das gefürchtete Motorklopf...

Fuel system and emissions

Kraftstofffilter alternativ befüllen

Der Name sagt es eigentlich schon: Ein Kraftstofffilter filtert Schmutzpartikel aus dem Diesel und verhindert so, dass sie in den Motor gelangen. Sie fragen ...

Fuel system and emissions

Clean a dirty throttle body yourself

All petrol engines have a throttle valve. The throttle body controls the amount of air entering the engine. Without oxygen the engine cannot run. The throttl...

Was sind Additive? Bevor Sie sich entscheiden, ein Additiv für Ihr Auto zu kaufen, ist es wichtig zu wissen, was ein Additiv genau ist. Additive sind Mittel,...

Fuel system and emissions

Engine idles rough

Learn why an engine may idle roughly, how intake or fuel system contamination can cause it and when a fuel system cleaner may help restore smoother running.

Fuel system and emissions

How do I increase the cetane number of diesel?

Discover how to increase the cetane number of diesel, reduce engine noise, improve ignition quality and support better diesel performance with an additive.

Engine oil and lubrication

Stuck oil control rings? Here’s how to free them

Stuck oil scraper rings are common. Oil scraper rings can become stuck due to contamination inside the engine. When this happens, they can no longer spring o...

Discover why low oil pressure is serious, what causes it and how cleaning the oil circuit may help when sludge or contamination is the problem.

High oil consumption in cars is a common problem. Everyone has had to deal with a car that uses oil. Normally the oil consumption of a car is acceptable if i...

Engine oil and lubrication

Is your car leaking oil? This is the solution

Oil leakage is a common problem, especially in older engines. You have probably seen an oil slick or oil drops under the car. A heavily loaded older engine m...

Engine oil and lubrication

Steering rack leaking oil: what you can do yourself

How happy we can be that cars these days are all equipped with power steering. However, it can happen that your car suddenly steers heavily and the power ste...

Engine oil and lubrication

Auto lässt sich schwer schalten

Mein Auto lässt sich schwer schalten, was kann ich tun? Nichts ist ärgerlicher, als ein Auto zu fahren, das sich schwer schalten lässt. Wenn Sie Probleme mit...

Engine oil and lubrication

Car steering feels heavy: what you can do

You may recognize it from the past, namely heavy-steering cars. Fortunately, this is no longer the case and all modern cars today are equipped with power ste...

Engine oil and lubrication

Reducing crankcase pressure

Crankcase pressure is a common problem in several vehicles such as cars and tractors. The cause of crankcase pressure is stuck and/or worn piston rings.

Engine oil and lubrication

How do you remove oil sludge?

Discover how oil sludge forms inside an engine, how it can be removed and why a motor flush or fresh oil can help protect engine performance.

Learn why driving with a broken valve lifter is risky, which engine problems it can cause and why repair or replacement should not be delayed.

Viele Menschen merken, dass ihr Auto Öl verliert, weil ein paar Tropfen auf der Einfahrt zurückbleiben. Ölverlust an Ihrem Auto ist sehr ärgerlich und kann a...

A red light will illuminate on your dashboard. It concerns the engine oil, so it is wise to stop on the side of the road for a moment. Wait 10/15 minutes and...

Oil is an important fluid for your engine. Without oil, the engine will not be sufficiently lubricated internally and metal-on-metal contact will occur, resu...

Sowohl beim Nachfüllen von Motoröl als auch beim Hinzufügen von Öladditiven empfehlen wir, den Ölstand niemals zu überschreiten. Befindet sich zu viel Öl im ...

Have you noticed that your engine is sweating oil? Then this does not always have to be a bad sign. Heavily loaded cars or motorcycles may sweat a little bit...

ATF-Öl ist speziell für Automatikgetriebe entwickelt. ATF steht für Automatic Transmission Fluid. Es gibt viele verschiedene Arten von ATF-Ölen auf dem Markt.

Discover how gearbox additives can help manual and automatic transmissions shift more smoothly, reduce friction and extend gearbox lifespan.

Learn how to prevent engine wear, why cold starts cause extra friction and how oil additives can help protect moving engine parts.

Learn how to change your own engine oil, recognise old or contaminated oil, choose the correct oil and use an engine flush safely for better engine protection.

Engine oil and lubrication

Kompressionsverlust beheben

Verschlechtert sich der Zustand Ihres Motors und bemerken Sie Leistungsverlust? Dann könnte Ihr Fahrzeug unter Kompressionsverlust leiden. Wir erklären Ihnen...

Engine oil and lubrication

Getriebeölverlust abdichten

Ölverlust im Getriebe tritt häufiger auf und kann sowohl Schalt- als auch Automatikgetriebe betreffen. Beide Fälle erfordern jedoch unterschiedliche Lösungen.

Car cleaning

How to Wash Your Car Properly: Step-by-Step Guide

Learn how to wash your car properly, remove road grime and salt, avoid wash scratches and choose the right Velorest products for each cleaning step.

Defrost your car window in five easy steps and learn how de-icer, winter screen wash and proper visibility checks help make winter driving safer.

Learn what the windscreen washer fluid symbol means, why it appears and what to check if the warning light stays on after refilling.

Discover how much windscreen washer fluid most cars hold, where the reservoir is located and why regular topping up improves driving safety.

Learn how to top up windscreen washer fluid, where to find the reservoir and why clear visibility starts with a full washer fluid tank.

Discover how to clean your engine bay safely, which precautions to take and how regular cleaning can help keep the engine compartment neat and easier to insp...

Learn how to wash microfibre cloths correctly, keep them soft and absorbent, and prevent dirt or detergent residue from damaging your car’s paintwork.

Clean your wheels in five simple steps and learn how to remove brake dust, road grime and dirt for a sharper, better-maintained car appearance.

Clean your car windows in seven practical steps and learn how the right glass cleaner and microfibre cloths help improve visibility and finish.

Cleaning car mats is by far the most boring cleaning job there is. You take all the dirt outside the car inside, after which it remains on the car mats.

Erfahren Sie, wie Sie Ihre Reifen richtig reinigen, Straßenschmutz und Ablagerungen entfernen und den passenden Reifen- und Felgenreiniger für ein saubereres...

Erfahren Sie, welche Tücher sich für Car Detailing eignen, warum Mikrofaser sicherer als Schwämme ist und wie der richtige Waschhandschuh oder ein Trockentuc...

Discover how to remove fallout from your car, recognise orange or brown rust particles and use the right products to protect paintwork and alloy wheels.

Vehicle technology and maintenance

Kühlmittel nachfüllen und Leckagen: Was sollten Sie tun?

Kühlmittelverlust kann erhebliche Schäden verursachen. Wenn der Motor eine Weile läuft, wird er warm. Die Betriebstemperatur liegt normalerweise bei etwa 90 ...

Find out what fault code P2463 means, why excessive soot builds up in the DPF and how a DPF cleaner can support regeneration.

Learn what fault code P20EE means, how SCR and AdBlue system problems can cause it and when sensors, dosing or catalyst checks are needed.

Learn what fault code P242F means, why a diesel particulate filter becomes clogged and how DPF additives may help burn off accumulated soot.

Find out what fault code P0401 means, how EGR blockages affect performance and when an EGR cleaning additive may help.

Learn what fault code P2002 means, why a clogged DPF affects diesel performance and how additives may support regeneration and soot reduction.

Vehicle technology and maintenance

How your engine silently gets dirty and why that is a problem

Discover how internal engine contamination develops unnoticed, what symptoms to watch for and why timely cleaning can help prevent higher fuel use and costly...

Discover what causes ticking or rattling engine noises, why hydraulic lifters may become contaminated and how oil additives can help reduce valve noise.

Vehicle technology and maintenance

OBD2 code P0420 fault code

Find out what OBD2 fault code P0420 means, which catalytic converter or sensor problems may cause it and when a catalytic converter cleaner may help.

Vehicle technology and maintenance

Coolant in oil: how to clean it

Discover why coolant in engine oil is a serious issue, what causes it and how an oil system cleaner can help remove contamination from the oil circuit.

Vehicle technology and maintenance

Oil in coolant: what should you do?

Discover what oil in coolant can mean, which cooling system problems may cause it and how a radiator flush can help remove sludge and contamination.

Learn what fault code P0300 means, which issues can cause cylinder misfires and how fuel additives may help when contamination is part of the problem.

Discover what common dashboard warning lights mean, why they should not be ignored and when it is safest to have your car checked by a mechanic.

Learn what fault code P0101 means, how a mass air flow sensor problem affects engine performance and when diagnosis or replacement may be needed.

Discover what fault code P0402 means, how EGR system problems can occur and when cleaning or further diagnosis may help solve the issue.

Discover what fault code P0087 means, which fuel pressure problems may cause it and how fuel system additives can support cleaner injectors and pumps.

Learn how to lubricate a stiff or stuck lock, prevent key damage and use a dry Teflon-based lubricant for smooth, long-lasting operation.

Sie sind unterwegs und plötzlich leuchtet die Motorkontrollleuchte auf. Bei den meisten Menschen schrillen die Alarmglocken, doch sie wissen nicht, warum die...

Find out what causes a stuck brake caliper, why the right assembly paste matters and how proper lubrication can help prevent brake problems.

Vehicle technology and maintenance

Outboard engine won’t start

Learn what to do when your outboard engine will not start, how Quick Start spray can help and when battery, spark plug or starter motor issues may need check...

Learn why a car may not start, how Quick Start spray can help combustion engines and when issues like the battery, spark plugs or fuel filter need checking.

Stop squeaking and creaking hinges with the right dry lubricant and learn how a non-sticky Teflon-based spray can provide long-lasting smooth movement.

Vehicle technology and maintenance

Cleaning a hybrid engine

Learn why hybrid engines can become contaminated, how oil system cleaning works differently and which additives can help protect and maintain hybrid combusti...

Bicycle maintenance

How to Clean Your Bike: Step-by-Step Guide

Discover how to clean your bike step by step, choose the right Velorest products and protect the frame, drivetrain and components from dirt, salt and wear.

Bicycle maintenance

How to Lubricate Your Bike

Learn how to lubricate and maintain key bike parts such as the chain, headset, hubs, seatpost and bottom bracket with the right grease, paste or chain lube.

Bicycle maintenance

How to Clean and Lubricate Your Bike Chain and Drivetrain

Learn how to clean and lubricate your bike chain and drivetrain properly, choose the right chain lube or wax and prevent noise, rust and premature wear.

Discover how to maintain your road bike yourself, from cleaning the frame and chain to lubricating the drivetrain with the right Velorest products.

Recognise worn sprockets by checking for damaged teeth, noise, vibration or poor performance, and learn why proper chain cleaning and lubrication matter.

Learn why your bike may be hard to pedal, which parts to check first and how regular maintenance can help keep your bike running smoothly.

Learn how to maintain an e-bike yourself, including tyre pressure, brakes, chain care, lighting and why professional checks remain important.

Discover why hydraulic system maintenance matters, how additives help reduce wear and leakage and how proper lubrication can extend machine lifespan.

Learn why trucks can use too much fuel, which diesel system problems may cause it and how diesel additives can improve combustion, power and efficiency.

Learn why high-quality bearing grease is essential, how it reduces friction and wear, and why Lindemann Red-G is suitable for demanding bearing applications.

Hydraulik ist eine Antriebstechnik im Industrie- und Agrarsektor und muss hohen Drücken, Temperaturen und harten Bedingungen standhalten.

Gute Wartung ist entscheidend für den Erhalt neuer und älterer gebrauchter Maschinen. Die richtigen Schmierstoffe und Fette sind unverzichtbare Produkte, die...

Discover why gear lubrication is essential, how it prevents metal-to-metal contact and how high-performance grease protects gears under heavy load.

Learn why pins and bushings need premium water-resistant grease, especially under heavy pressure, dirt and outdoor conditions.

Je größer die Maschine, desto mehr Wartung benötigt sie, um reibungslos zu funktionieren und Verschleiß zu vermeiden. Krane, Turmkrane und Teleskopkrane sind...

Discover how hydraulic oil leaks can occur, how preventive maintenance helps reduce risks and how HYD-Stop Leak can help seal or reduce leakage.

Learn how to lubricate a truck fifth wheel, why regular greasing is important and how high-pressure grease helps protect sliding surfaces under heavy load.