Hi!
I have some issues with my Q5 2009 2.0tfsi. Somehow it seems that petrol comes into the engine-oil. It all started in early December, car wouldn't start. Charged battery and it started again. After running some miles and let car idle it almost imedeatly started warn about low oil pressure. Or at least it says turn off engine, check oil level. Kinda fuzzy oil pressure warning.
Anyways. I didn't realise that it was a fault with the oil pressure, I just did what it said. Oil level was in the middle. Drove some more the next day, no warning. Checked oil level next day, Now it was full. Hmm. Took the car to work next day, thinking it was fine. But when I arrived at work, got out of the car to open the gate, it started to warn again.
Then I decided that I probably shouldn't drive it anymore. Took the bus home, and ordered an real dipstick to be able to really check oil-level. To my surprise it really was full, but not only that. The oil was thin as water, and smelled of petrol.
Had the car towed to nearest Audi shop, and then it began. After 6 weeks the car was "finished", they though the problem was clothed oil channels. I picked up the car in January 15th and thought it was mended. Bill was about 11.000 dollar. Audi payed most of it, but lot of money anyways!
But I had some nagging in my mind, they didn't really do anything about the petrol in the oil, they just said it could get that way if you drive short distances often. But the oil was just about 1200 miles old. Didn't seem right.
But last Friday, 12th February it started warning again. Low Oil pressure again. Thin oil. Full of petrol. Worse than last time. This time the oil had 600 miles on it.

What could have happened to it? The Audi shop pays the bill this time, but it's really annoying anyway

Sorry for my English, I'm from Sweden :-) forgot all about English grammar.