Water pump impellers - brass vs steel vs plastic and OAT coolant
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  1. #1
    Gone Fishin' Haakon's Avatar
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    Default Water pump impellers - brass vs steel vs plastic and OAT coolant

    Am looking at the Sasic brass impeller water pump for the Megane, and wondering - don't modern OAT coolants dislike brass...?

    All sorts of theories abound on the notion of plastic vs metal that I have not usually bothered thinking about, but this one makes me wonder... Not really keen on introducing electrolysis into the system.

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    Although with 25,000km on it, I should probably leave the original one in there, were it not for the concern about it being 7 years old...

  2. #2
    Gone Fishin' Haakon's Avatar
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    Scratch that - Type D is Ethylene Glycol. All good.

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