Diesel Clean-Up

smoke and emission reducer concentrated direct application via fuel filter

Wynn's Diesel Clean-Up is a concentrated product for cleaning diesel fuel systems which is used undiluted for filling up the fuel filter.

  • Reduces black smoke, soot and exhaust emissions.
  • Restores injector spray pattern.
  • Decarbonises the combustion chamber.
  • Restores compression and improves combustion.
  • Cleans the fuel injection pump and fuel lines.
  • Lubricates the fuel pump.


For all diesel engines with or without turbocharger.


Bring engine to operating temperature and switch off.
Remove and empty the fuel filter or housing.
Add contents of the 325 ml bottle to the fuel filter or housing (do not apply via the fuel tank). If necessary top up with fuel.
Refit filter and start engine.
Immediately drive the vehicle for at least 3 km (2 miles) at moderate speed.
To maintain efficient operation, it is recommended that Wynn’s Diesel Clean-Up is used every 6 months.


PN 25241 – 24x325 ml – EN/FR/NL/IT/DE/RU




Both modern cars and older vehicles have specific requirements, that have a chemical solution to provide the optimal engine performance and driving comfort. Modern fuel systems are highly tuned and therefore more susceptible to the negative effects of chemical reactions in the fuel. These lead to fouling of the fuel system, lack of lubrication, corrosion and other problems. Older vehicles experience problems to obtain the correct air/fuel ratio and combustion efficiency due to accumulation of deposits in the fuel system and wear on the components.