[Prime] Liqui Moly Engine Flush Plus 300ml $11.48 Delivered @ Amazon AU

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skillet on 08/07/2025 - 11:29 amazon.com.au (407 clicks)
Last edited 08/07/2025 - 11:42 by 2 other users

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Nothing beats regular maintenance. If you let thick sludge build up this isn't going to clean up your negligence.

I use this on every oil change. Drive the car around to warm up the oil this is faster than sitting idling. Then add engine flush to engine. Let it run idle read the instructions! Drain the oil.

Here's my cocktail. I usually buy cheap oil, fill the engine, run it for another 5 minute. Then do a second drain to get liqui moly out of the engine. I filter this oil and reuse it for next flush. I use it two or three times.

Torque the sump plug, fit a new oil filter. Finally add new oil to max level.

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• 

  hashish on 08/07/2025 - 11:33

  +2

  I just use diesel, 500-750ml,
  Drive around the block and dump the oil.
  Been doing it for almost 20yrs, no issues.

• 

  TEER3X on 08/07/2025 - 11:46

  +7

  I use this on every oil change

  Then you're likely wasting money.

  • 

    eddyah on 08/07/2025 - 12:38

    $12 once per year is cheaper than buying another car

    • 

      krisspy on 08/07/2025 - 12:42

      +3

      I've never used this in my life and my old car lasted 20years/440 thousand kms

      Not flushing your engine isn't gonna magically make it last for an eternity. You never get all the dirty oil out, it's always gonna have gunk.

      If you wanna really flush your engine, get a Jerry can of diesel and pump it through the engine with the sump open.

      If anything this would dislodge sludge/gunk on a neglected car and block something else along its path

  • 

    Junk Sifter on 08/07/2025 - 13:47

    +1

    Adding to this comment to make it constructive; if there's no sludge, there's no point in using engine flush to begin with. The additive package in good quality engine oil does the job of keeping the engine clean.

    Here's my cocktail. I usually buy cheap oil, fill the engine, run it for another 5 minute. Then do a second drain to get liqui moly out of the engine. I filter this oil and reuse it for next flush. I use it two or three times.

    I can see the thought process behind this and OP can do whatever they want, but in practice it's a waste of time at best. For those playing at home:

    • This could be an attempt to remove the dilution of residual engine flush, which only works on the first fill of the new "cheap oil". Keep in mind whatever flush remains in the sump after it's been drained comprises less than 1% percent of the sump capacity after the first fill so there is little benefit and there's diminishing returns on subsequent drains/refills.
    • I don't think that is the intention here because on subsequent refills reusing the flushed "cheap oil", it's not removing but adding engine flush dilution to the sump which is a bad thing for the new oil for the next service interval.
    • Unless the "cheap oil" is filtered with proper oil filter media after it's been drained, this achieves very little as whatever particulates have been drained out are put back into the engine. Sure it might remove some larger particulates, but that's what the oil filter is for and they generally outlast drain intervals in healthy engines.
    • It's not a good idea to mix different engine oils. Depending on the type of "cheap oil" used, this ranges from no impact to relatively bad if the additive package of the "cheap oil" is not compatible with the good oil for the next service interval. Better to stick with only putting in oil that meets the manufacturer specs (therefore compatible with each other), and that can mean that no "cheap oil" exists that meets the spec.