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Undissolved deposits in the oil system. What to do?

It is the perennial question. If the oil lube system must be cleaned then why, when and how often? It is assumed that the additives package included into the engine oil copes fully with oil contaminations. But factors such as the mode of operation, fuel quality, driving style, the climatic conditions, stop and go driving in a city and the road quality all have adverse impacts, reduce the service life significantly and increase oil consumption.

BIZOL Oil System Clean+ o90

ATTENTION! Never use it for motorcycles with a wet clutch.

The additive is used to clean the oil lube system when the engine oil is replaced


  • it will remove deposits and high-temperature sludge from an engine
  • it is compatible with all engine lube oils available commercially
  • it is advisable to use it at each lube oil changing for all petrol and diesel engines.

Oil Additives

BIZOL Oil System Clean+ o90


  1. long term cleaning of the oil system from sludge and deposits with special highly effective detergents
  2. can restore the initial engine compression
  3. prepares the engine for the next oil change

Product Description

BIZOL Oil System Clean+ o90 is an engine oil additive Made in Germany especially developed for the maintainance of the entire oil system. Highly effective cleaning agents dissolve soot, varnish and deposits on all surfaces, including hydraulic tappet, in the engine. All deposits are removed without affecting seals or gaskets by draining the used oil. BIZOL Oil System Clean+ o90 prepares the oil system for an optimum performance of the fresh engine oil. Cleaning the oil system with this product will increase compression and restore the elasticity of o-ring seal. Improved compression reduces exhaust gases and thereby protects the catalytic converter and DPF. This results into a noticeably smoother engine run and increased operational reliability.

Available Packages

Article Nr.Size in LitresLanguages
8883250 mlDE / EN / FR / ES / ZN / AR
98883250 mlEN / GR / PL / RO / RU

How to use

A 250 ml can is efficient for up to 5 litres of engine oil. Add to used motor oil at operating temperature before changing the oil. After adding the product, allow the engine to idle for approx. 10-15 minutes. Then change the oil and the filter. Compatible with all commercially available engine oils. Not suitable for motorcycles with wet clutches.

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