Fuel and Lubricant Solutions


The High Performance Diesel Additive


Big tasks require maximum power to be available on demand. With poor quality fuel, deposits can slowly build up inside your engine. Accumulating over time, these deposits ultimately prevent the motor system from exploiting its full potential and delivering its optimal performance. The cure? KEROPUR®!

BASF’s high performance diesel fuel additive KEROPUR® D provides an impressive “cleaning effect” to help remove and prevent performance-limiting deposits at the heart of your vehicle. Beyond that, KEROPUR® D boosts the cetane number of your diesel fuel.

So ensure you’ve got the power when you need it!

You’ve got the power!

Engine Performance Restored

  • Removes already existing deposits (clean-up)
  • Prevents formation of new deposits (keep-clean)
  • Improves cetane number and fuel stability
  • Enables better start-up and driving behavior
  • Prolongs engine life
  • Improves fuel economy

Prime Performance

KEROPUR® D multifunctional diesel fuel additives ensure your diesel engine is clean and protect the entire fuel system. The additives remove already existing deposits (clean-up effect) and prevent the formation of new deposits (keep-clean effect). KEROPUR® D also improves the diesel’s cetane number which leads to an improved ignition and smoother combustion process.

Performance benefits, enabled by KEROPUR® D, have been proven in a wide range of engine and on-road tests – conducted, amongst others, by BASF’s Competence Center Fuels & Lubes in Ludwigshafen, Germany. Your clean engine will not only result in a longer engine life – you will also benefit from the better start-up and driving behavior, having restored the full potential of your engine. The boosted cetane number enables a better and quieter start-up even at low temperatures.


Reliable Efficiency

KEROPUR® D supports the use of all common diesel fuels and significantly improves stability of fuels with various biodiesel content. By boosting your fuel’s performance, you will also be able to reduce your engine’s fuel consumption which in consequence also means less emissions.

Quality Made in Germany



With KEROPUR® high performance fuel additives you simply require 100 ml per tank (45-75 L) for optimal performance.


Diesel Fuel Injection and Formation of Deposits

Internal diesel injector deposits (IDID)

Deposit formation on valve, piston and needle resulting in:

  • Difficulties to start the engine or no engine start
  • Engine vibration and trembling
  • Increased engine noise

External spray hole deposits

Nozzles of modern diesel engines have a very small sprayhole diameter: Hundreds of micrometers or even smaller. Inside the spray holes, deposits may form and reduce the amount of injected fuel. The reduction of injected fuel causes powerloss of the engine.

The Cleaning-Effect for Diesel Engines

Based on tests and research conducted by BASF’s Competence Center Fuels & Lubes.

Fuel and Lubricant Solutions from BASF

Your Leading Solution Provider

BASF is a leading supplier of fuel performance packages worldwide. Fuel additives have been produced in Ludwigshafen since the 1920s. With our long and outstanding history as a global fuel performance packages supplier, we have the capability to offer you highly effective formulations which bring out the best in fuels and engines. This is our passion and we work hard for it.

In our regional test centers in Europe, Asia and in the US, we continuously perform a broad range of tests aimed at, both, conventional as well as cutting-edge engine technologies. Always with the clear goal to deliver solutions that make fuel different from any other fuel out there.

This depends on the specific fuel quality available to you. We recommend to apply KEROPUR® D with every third or fourth stop at the gas station.

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KEROPUR® high performance fuel additives are formulated as highly concentrated products and therefore employ a highly efficient deposit control formula. Therefore, the addition of 100 ml high performance additive provides optimal results in 45-75l of fuel.

(also see dosage recommendation)

Over time, deposits tend to build up in any combustion engine. As deposits accumulate, this gradually brings a loss in power, fuel economy and drivability – compared to the clean condition of your vehicle. Cleaning the engine, by removing and preventing these performance-limiting deposits, KEROPUR® D helps you to restore and preserve performance you would otherwise forfeit.


Beyond that, the KEROPUR® D cetane booster accelerates the diesel fuel's combustion process which adds to the improved functioning of your diesel engine.

KEROPUR® D can be added to any kind of diesel blend and and significantly improves stability of B0 diesel and biodiesel blends.

KEROPUR® D high performance diesel additives can be used in all diesel-powered vehicles such as passenger cars as well as light-duty trucks & vehicles.

KEROPUR® D high performance diesel additives can be used with any type of diesel injection system – including common rail, unit pump and rotary pump.

BASF recommends KEROPUR® D for use in all brands of diesel powered vehicles.

Empty bottles should be disposed directly at the gas station into the respective waste containers, for example, the bin for empty lube oil packages.