Thanks JCL,

I will have a look at that info.

I don't think condensation is a problem, the car only does trips of 200km or more at highway speeds - never any less. My wife checks the oil with the iDrive, which says 'max', and then I pull the dipstick and it says 'min'. Which one should I believe?

And therein lies the problem, I need to know that she will not have a problem and not have a warning light come on in the middle of nowhere!

I guess I just expected that the iDrive might give me some warning that I may need to add some oil soon. I have never seen the level anything other than all green bars - even when the dealer had to add a litre. Should I get the sensor checked? The software was updated a month ago - but that's another story.

Cheers, Maddog.

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