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Thread: Brand new water pump seeping gear oils. Is that normal?

  1. #1
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    Brand new water pump seeping gear oils. Is that normal?

    Hello,

    I'm about to replace the water pump and thermostat on my e92. And I noticed that the new pump from FCP (Pierburg) is seeping oil (looks and smells like some sort of gear oil). I thought it was a defect so I requested for a replacement. But the replacement pump looks like it is also seeping. Is this normal? I tend to think there is something wrong with the gasket or some sort. But this is my first time dealing with an electric water pump so I wanted to ask for a second opinion.

    Thank you.

    [Edit] I thought about it more, and perhaps the manufacturer put some oil to protect the pump. What do you think?
    Last edited by nevan; 08-30-2022 at 02:42 PM.
    2000 Z3 M Titanium Silver / Imola Red+Black Nappa
    2011 328i E92 Space Gray Metallic / Leder Dakota+Oyster
    Since 1987 12 euros / 2 kdms / 2 jdms
    - Zach

  2. #2
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    We have an E90, not this problem, so I was curious. If you google " e90 water pump oil leak " you get a lot of info

  3. #3
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    Thanks, zellamay. As you suggested, I was able to find the answer from google. Someone posted a youtube video on how to disassemble the pump unit. From the video, it occurred to me that the oil was used to lubricate the electric motor so that it won't rust while on the shelf. But I'm only speculating at the moment and waiting on FCP to get back to me to be sure as they are looking into it for me.
    2000 Z3 M Titanium Silver / Imola Red+Black Nappa
    2011 328i E92 Space Gray Metallic / Leder Dakota+Oyster
    Since 1987 12 euros / 2 kdms / 2 jdms
    - Zach

  4. #4
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    '94 325iC, '08 328i, E93
    Quote Originally Posted by nevan View Post
    Thanks, zellamay. As you suggested, I was able to find the answer from google. Someone posted a youtube video on how to disassemble the pump unit. From the video, it occurred to me that the oil was used to lubricate the electric motor so that it won't rust while on the shelf. But I'm only speculating at the moment and waiting on FCP to get back to me to be sure as they are looking into it for me.


    I would speculate the same thing.

    You know what you could do? Go down to the corner auto parts store and compare their pump to the one you have. If you are correct about the oil, you should see it on the pump that they have.

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