Thanks for the reply….Its driving me nuts , yesterday I tightened oil filter cap again just a notch went for 2 mile drive stopped checked if there was any sign of oil and there wasn’t…got back home 2miles the other way and there was a slight leak ….SO tightened it a tad further with engine still hot and running, further drove about 7 miles and NO leak….

I start her up from cold today and it leaked (I am not talking major leak but a leak as described in start of post) after it reached op temp I could see the oil film has spread out as the talcum powder I sprinkled on oil filter cap was disturbed….. tomorrow I am off on a long drive and will see how it behaves….could this sort of leak be an issue? Air get into oil as such or is that a stupid question?

Also I am actually thinking of getting perhaps 0.5 litres of oil sucked out of the car, as until last oil change my oil level was when cold at level shown in the pic…(when warm it was between the 2 levels so fine)

However after recent oil/filter change and putting in the 7.5 litres recommended this level is higher(but again within 2 bands when warm), dunno perhaps it doesn’t like this volume of oil…got nothing too lose I guess...

IF i get a new filter in case the o ring on the existing one is gone, do I oil the o ring and all all the threads on the oil filter cap?

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E53 X5 3.0d SUV prod.date 11/2004 eng.variant M57N Europe Right hand drive N