smoke after 2 weeks standing

my cars been stationary for about 2 weeks...started it today, and it smoked quite alot after starting her up. This subsided fairly quickly and apart from that never smokes from ignition etc normally, engine seems very smooth as always. Its a 6cyl 530i (88') with 130k miles on it. Ive been told that its to be expected form an old car with the mileage, and I presume its a valve stem seal beggining to show wear?

I just want to know if this is something serious, or something that can be overlooked until it becomes a more serious problem. I'm probably not going to have the car for more that a year or so.

No worries from what I read.

What color smoke? If its blueish or blacking valve stem seals would make sense, but I've never heard of that being a major issue with the M30 engine. If it was just white smoke its probably fine.