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  1. Hello, regarding the section below, I cannot see the floating coolant dipstick and have not removed or broken it myself. What would cause it to break? I have noticed on rare occasion a small drop of coolant on my garage floor. Is there a way to top-off the coolant without the dipstick indicator? What would the consequences of putting too much coolant into the system?

    “When I check the coolant level, my BMW does not have a floating dipstick.

    The coolant level may be shallow, causing the float to be much lower than the min. In this case, it may be hard to see the float. Use a flashlight to look inside the coolant reservoir. If the float device is not present, it may be removed or broken.”

  2. Anonymous says:

    outdated info , all newer BMW have (2 )Two caps , so whats the deal?

  3. Anonymous says:

    Just wanted to note that if you want to do an actual venting using the water pump:
    – Insert the key into the dash slot, hit the starter button (but don’t start the engine – e.g. keep your foot off the bake/clutch)
    -or if you don’t have start button turn key to position 2
    – Turn off accessories to save battery or put a battery tender on
    – Set the heater to the highest temp and set the fan on low
    – Hold down the accelerator pedal (right down to kick down point) for at least 10-15 seconds, you should hear the water pump start
    – The water pump will run for 12 minutes, after which time open the reservoir cap and recheck the level, refill as necessary
    – You might want to run this twice, if so I’d suggest putting the battery on a tender.

  4. MBFanatic says:

    Pete I know it has been a while but what happened is that the car overheated. The high pressure in the cooling system caused the coolant to overflow and spill as you describe. I would top it off for now which I assume that you have already done. But keep an eye becasue you will most likely have the issue come up again. The normal operating engine temperature is in a range of 200 to 220 degrees Fahrenheit.

  5. Anonymous says:

    If the engine is hot 215 degrees and the car is turned off, is it likely the antifreeze resivour purged a cup onto the ground through an overflow? Since the fluid questionable purged the low coolant light had come on… 2008 650i
    What is the optimum or maximum engine running temperature for this 8 cylinder BMW?

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