How long should the oil light stay on after a cold start?

Asked by May 09, 2017 at 08:14 AM about the 2009 Vauxhall Insignia 2.0 Elite (Nav) Saloon 4d auto

Question type: Maintenance & repair

How long should the oil light stay on after a cold start?
I'm currently looking at a one owner 2009 insignia CDTI auto (on 98k) which
has a great service record but upon starting it from cold the oil light stayed on
for around 3-4 seconds. Is this something to be concerned about?

3 Answers

1,520

I wouldn't necessarily think this is a huge problem, but there are some things you could check. If the oil is low (ie at minimum on the dipstick) the oil light would take longer to go out. When you say it was from a cold start, do you know how long the car had been standing without being used? If it's been immobile for a period of time (has the car been at a dealer unused for a week or so) then there will have been plenty of time for all the oil to drain into the sump leading to a longer period of the oil light staying on. As modern synthetics tend to be quite thin it can take a couple of seconds for the oil pressure to build when starting from cold. Did it sound unduly noisy when starting? There's an outside chance that the oil pump is on its way out, but this engine isn't known for faulty oil pumps. If the rest of the car looked good then I wouldn't think it's a problem.

1 people found this helpful.

Thanks for the reply. I'm not too sure how long it had been standing unused to be honest. I let it idle for a few minutes and then restarted and it still took a similar length of time to turn off. The engine sounded good to me, from my understanding the Diesel engine in the earlier insignias aren't the most refined so it wasn't exactly quiet but didn't sound unusual, just that classic diesel sound. I gave it a bit of a rev whilst standing to check for DMF noise and it seemed to rev smoothly both engine noise and DMF wise.

1,520

I think if it sounded ok without any abnormal rattles it will be fine... as you say it's possibly not the most refined of diesel engines. If the history checks out then I'd see no reason not to go for it.

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