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  1. Who else still has the original cooling system?

    General E46 Forum
    I feel like I'm definitely one of the few at this point.. It's a 1999 with 113k miles.. So the only thing I've done is flush my coolant at 50k miles, and I did the fuel filter at the same time. I bought a new water pump and thermostat before I hit 100k, expecting them to die swiftly since...
  2. why is the BMW coolant system the way it is?

    General E46 Forum
    OK. new to BMW. Fine car. But it seems like cooling system issues are common. I understand that plastic fails with age, and that is a likely cause of system failures. But I can't help wondering if the design is also part of the problem. Many (most???) cars use an overflow tank and a pressure...
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