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    sbthao's Avatar
    sbthao Posts: 10, Reputation: 1
    New Member
    		  
    #1

    Feb 21, 2010, 01:22 AM
    92 BMW 525i In-line 6
    It has oil in the reservior (where the coolant/water stays in, not the radiator), can you help me why that is? Also the car is blowing out smoke, maybe a head gasket or a cracked head? Help please, thank you!
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Feb 21, 2010, 06:19 AM

    The engine likely overheated, warping the aluminum head. Afterwards, the head gasket blew, causing oil and coolant to mix.

    I would tow the car to BMW and have them repair the head, which may need machining. There's a real possibility of valve damage, also.

    The cooling problem also needs to be solved. I suspect phosphate scale blocked passages in the radiator, which may need to be replaced. Afterwards, refill with a 50/50 mixture of BMW recommended antifreeze (likely G-05) and distilled water:

    https://www.askmehelpdesk.com/cars-t...tml#post235973
    sbthao's Avatar
    sbthao Posts: 10, Reputation: 1
    New Member
    		  
    #3

    Feb 21, 2010, 09:33 AM

    So the cycling system is not like the BIG Rigs? Because when the oil cooler goes out, it throws the oil in the radiator and water in the pan.
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