patricks said:
.... by the time i realised it was leaking i had to put in a bit over two litres of oil just to get to the min mark on the dipstick :banghead: ...
If you didn't do any hard cornering while oil level was too low, there is a chance that the oil pickup tube was never exposed. Most engines are designed with a generous built-in buffer between min oil level on dipstick and absolute minimum level for safe operation. Some engines will hold oil pressure on just 1 litre of remaining oil (provided you drive very gently to the nearest oil shop :eek: ).
If the low oil pressure warning never came up ...

... that's a good signal (provided low oil pressure warning is reliable on Z22SE engines).