Simple remedy for oil sludge in the engine

#Vintage Cars

Many short-distance journeys often lead to oil sludge in the engine. We will explain how it forms and how to get rid of it quickly and easily.

Causes of oil sludge formation

Three indicators are responsible for the formation of oil sludge in the engine: oxidation, nitration and sulfation.


Heat and oxygen cause oil to oxidize. Acids and oil-insoluble components form. These in turn are often the cause of paint-like resin formation or sludge-like deposits.


The oil is contaminated with nitrogen compounds (NOx). They are produced during the combustion of fuels. The majority of NOx is released into the atmosphere via the exhaust. But as a “blow-by” gas, small quantities enter the crankcase and thus the motor oil. Nitration results in paint-like deposits. The lubricant often thickens and can lead to the formation of black sludge.


Sulfur oxides (SOx) are produced when sulfur-containing fuel is burned, which is practically no longer on the market in Europe. Here, too, the largest part is discharged via the exhaust. As with nitrogen compounds, a small proportion of sulfur oxides, as part of the “blow-by” gas, also flow into the crankcase and thus into the motor oil. Sulfides are formed in combination with condensation. This sulfation also causes the motor oil to thicken.

The result

The harmful components do not evaporate and the formation of oil sludge continues. Short-distance driving encourages these chemical reactions because the motor oil does not reach the required operating temperature.

Problem solvers: Oil Sludge Flush

Our Oil Sludge Flush quickly and easily removes these components and residues from the entire oil circuit.

The formulation of the additive cleans the entire system and flushes out the deposits and the oil sludge during the oil change. The perfect solution for gently cleaning the engine from the inside, including oil bores, oil strainers, piston ring grooves and ducts, and to prevent engine damage. Black sludge as well as other contamination and deposits are a thing of the past. In addition, the additive increases the operating safety of the engine and prevents insufficient lubrication.

Use: The Oil Sludge Flush added to the motor oil approx. 100 km to 300 km before the planned oil change. The motor oil change is carried out after the distance traveled (this does not have to be covered in one go).

  • Economical
  • Prevents expensive repairs
  • Prevents inadequate lubrication
  • Prevents build-up of combustion products
  • Cleans oil ducts, bores and sieves
  • Reduces deposits
  • Removes black sludge
  • Easy to use