Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › Engine Oil Flush

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  • August 12, 2019 at 1:14 am #76650

    Scott Lambert
    Participant
    Vessel Name: Old Man River
    Engines: Cummins QSB 5.9
    Location: Akuna Bay, Sydney
    Country: Australia

    I am about to change the oil on my QSB 380. Do you recommend adding an oil flush product prior to draining the old oil? I have never used these type of products before, do you think they are worthwhile?

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  • August 12, 2019 at 8:18 am #76676

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    I would add absolutely nothing but the engine oil that is spec’d by Cummins.

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    Scott Lambert
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