Yep, Change the oil and filter if you haven't all ready and just drive it for a few hundred km's and keep an eye on the smoke. It may disappear or stay.
Our Ke11 use to blow a little smoke and it only had been driven a handful of times in a few years. Fresh oil and some spirited driven fixed it and now it doesn't blow anything. A 41 year old 3k that doesn't blow smoke is hard to believe, i know.