update again no smoke while idling now ,can drive x5 with slight smoke, when accelerating hard , a lot more smoke, no more knocking in engine. ( had all cylinders misfiring for awhile which might of caused the knocking) drove it again today no codes came up at all this time ,engine idles smooth and no hesitation at all. hope this is a good sign. now just to get all the oily sludge burn out of the exhaust system. might have to drive it at night .

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2003 bmw x5 3.0i ,219000km build date 2003-08-18