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Thread: 4bd1 coolant change

  1. #1
    Join Date
    Jan 1970
    Location
    Salisbury - Brisbane
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    4bd1 coolant change

    Can any of you Isuzu County owners tell me the tricks/traps of doing a coolant change? The Landy manual doesn't cover the Isuzu and the Isuzu manual just says to change it

    Is there a drain bung? filler? is 10/10ths coolant OK? Do I have to pay special attention to bleeding the system?

    Any help appreciated.

    Bruce

    86 Isuzu County.

  2. #2
    Join Date
    Jan 1970
    Location
    Camp Hill Queensland
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    775
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    Just changed mine whilst getting the rad rodded and cleaned.

    I have a V8 rad on my Isuzu. It has a bung near the bottom of the engine side. I have just been using the 200ml can of Castrol Radiator Corrosion Inhibitor for the last 5 years.

    The rad has a bung on the top left that I use to fill it. No problems with air locks that I've noticed.

  3. #3
    Join Date
    Feb 2005
    Location
    Bracken Ridge - Brisbane - QLD
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    14,276
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    a mate of mine tells me SQ36 was the recommended coolant for the ISUZU's when they were first sold

    the army used to use aflock2000, they now use the latest from aflock 2020 or 2004 something like that

    hth

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