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Thread: best coolant Ph level-??

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  1. #17
    Join Date
    Jan 2004
    Posts
    4,150

    Default Russell ,running the factory bmw coolant which is

    zerex g48 the ph is 8.1 at 50/50 mix levels. You can test with litmus strips as others have suggested. Here's a couple of documents with some ph info on them from bmw and from zerex for the g48 factory coolant



    Quote Originally Posted by Russell
    What is the appropiate/best Ph level for BMW's coolant system?. It is my understanding this is very important for BMWs. Also, how can I test at home? Did not find anyting on ph levels in archives. Tried 3 different ways.

    BTW, I use BMW blue with distilled water at all times. Been two years since changed.

    TIA
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