I bought a 57 plate signum 1.9 cdti 150 auto a couple of weeks ago. On a number of occasions, usually when coming to a standstill in traffic when on a run, particularly down the motorway, I have had fumes coming into the cabin through the air vents.
I called Vauxhall about the problem about a week ago and have it booked in for this Thursday.
However, when going down the motorway today I had the same problem, except this time when coming to a standstill smoke also poured out of the bonnet. I stopped on the hard shoulder, popped the bonnet and the smoke seemed to be coming from underneath the engine. It dissipated and I then carried on with my journey.
However, I have checked the oil level tonight and it is well over the max mark, I would say by about the same amount as the length from the min to max (about 1 1/2 inches). I know that the car's supposed to take 4.3 litres in total but I don't know what an extra 1.5 inches showing on the dipstick would be - half a litre or two litres?
The garage did an oil change when I picked the car up so it looks like they put way too much in. No doubt on Thursday they will drain some out and the problem will go away.
The question is, do you think it will have done any lasting damage that might not become apparent for 6 or 12 months? I've done 1000 miles since picking the car up so am worried about engine wear and it running like a dog in the months to come.
Any advice much appreciated, even if only to put my mind at rest!