It’s often said, “If your engine’s oil is changed according to schedule, it should never need a flush!”

In a perfect world, this might be true. However, several factors can lead to engine sludge buildup and fouled piston rings. With modern emission control components, extended oil change intervals, and frequent city driving cycles, black oil sludge is more common than ever!Using CEM’s Flushing Oil Concentrate, you can safely remove built-up engine sludge and old oil, restoring your engine’s cleanliness and performance.

Why Do You Need to Flush Your Engine to remove built up sludge?

City driving is notorious for creating carbon deposits in combustion and exhaust spaces, especially in piston ring grooves. This can cause several issues, such as:

  • Fouling of EGR (Exhaust Gas Recirculation) Valves: Leads to increased soot in the oil and diesel particulate filters (DPFs).
  • Diluted Oil: DPF regeneration cycles can introduce diesel and soot into the oil.
  • Fouled Fuel Injectors: Modern injectors have finer tolerances and can easily become clogged, resulting in poor combustion and further deposits entering the oil.

Additionally, Australia’s higher ambient temperatures and long travel distances are not always compatible with extended oil intervals designed for cooler northern hemisphere climates.

Many modern diesel engines now travel twice as far as older diesels before a recommended logbook service. With 20,000 km oil change intervals, it’s no surprise the oil can turn black immediately—even before you leave the dealership’s car park!

When Should You Flush a Diesel Engine?

If your vehicle has exceeded 100,000 km, it’s likely time to flush the engine. In some cases, missing oil changes or failing to replace the oil filter can necessitate a flush as early as 30,000–40,000 km.

The goal is to keep your engine clean from the start. After a service, the oil should “look and feel clean” and not discolour immediately. Regular flushing at each service removes built-up black oil and keeps your engine performing at its best.

Benefits of Flushing Your Diesel Engine with CEM’s Flushing Oil Concentrate

    • Increased Compression: The concentrate dissolves and removes carbon deposits around piston ring grooves.
    • Restored Engine Performance: Removes sludge and carbon buildup, leaving the crankcase as clean as new.
    • DIY-Friendly Process: Flushing your engine is as simple as completing an oil change.

Step by Step Process

Flushing your diesel engine is an easy DIY process. By following these six simple steps, you can safely remove unwanted sludge and built-up carbon, restoring your engine’s cleanliness and efficiency.

  1. Drain the old oil from your engine and refill with clean oil (this can be generic off the shelf engine oil, suitable for the vehicle)
  2. Add CEM’s Flushing Oil Concentrate.
  3. Run the engine for 30 minutes as directed.
  4. Drain the oil and remove all sludge.
  5. Replace the oil filter.
  6. Refill with fresh, high-quality engine oil.

Contact Us for More Information

If you’d like to learn more about flushing diesel engines, feel free to reach out to Brid and the team. Call us at +61 7 3376 6188 for expert advice on keeping your engine clean and performing at its best.

Original content supplied by Cost Effective Maintenance