John,
Unfortunately the situation is like this engine being a 2.0DTI.
When I first visited the Backroom oil consumption was at a level I could not believe, but amazingly rather than post a question I searched on the old threads,....... yes I know strange but true.
Anyway there was a thread which gave the excellent advice which basically boiled down to read the owner's manual and do it like that, hmmm doh!
So since then I only dip the oil when the engine is at normal operating temp, after it has been stood on the level for about 30 minutes. If it needs topping up, only add oil a bit at a time until further level checks show that it is half way between the marks on the dipstick. The aim being that there is enough oil and yet I have not overfilled it.
With this method the oil consumption reduced, so previouslt there must have been an element of overfilling. The consumption has not fallen to a level which I call acceptable but nevertheless the response from GM is this is within tolerance or however they word it.
Now for reasons too long to explain here comes the rub. The car had its 40k service a while back. Checked the oil after its service and it was clean and full. OK! However then I put some mega miles on in very rapid time and I forgot to check the oil! Yes I hang my head in shame as the tyres etc were not checked either. However after only 2000 miles the "check oil level" message came on on the LCD display! Of course I pulled over as soon as it was safe in order to put in the litre I carry, and having let it stand for the statutory not only was it below the minimum, it was off the dipstick! Well Ok there was a tiny little drip on the end. (That's just a feed line to all you comedians for comments about like the drip behind the wheel yeah yeah!)
Whatever GM says I do not regards that as acceptable consumption. To answer the obvious questions there are no leaks, and following the car driven by someone else it does not look like an oil burner.
In his Saturday DT column a while ago HJ asked for contributions about these engines and oil consumption, so HJ here is mine.
best regards
Stuart
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