I have done a search and I think I know the answer, but it's always good to check. My cars been pretty good up to now with no loss of oil, except for recently where ToyodaTech diagnosed rocker cover bolts were lose and oil was leaking down the side of the engine.
Well some of you on the Saturday Gumball may remember my car was smoking a bit which it has never done before. This was most noticable when we stopped at LongLeat. There was a good mile or so drive at sub 20mph up to the gate, and when I pulled away from the gate there was a big puff of oily smoke. It did it again in the car park when I pulled away. When I got home I checked the oil and it was half way. I then checked it again after the Sunday Gumball (320+ miles of spirited driving) and it was still half way. However, on my way to work this morning I accellarated hard to get into the fast lane and for a second or so the oil level warning light came on. It didn't do it again but I was not happy. I'm just letting the engine cool down now and I'll go and see if any more oil has been lost. There is an oil burning smell, but not all the time. When I started the car this morning there was no signs of burning oil nor any smell.
So, given the details above and the fact I was running 1.2-1.3 bar for a few months without knowing it, and the fact the car is just about to clock 80k miles, what d'ya think it is?