Does it smoke when you accelerate or deaccelerate? If it smokes on acceleration, it's most likely rings. If it smokes on deacceleration it's valve guides or a leaky intake manifold gasket.
I have looked in both cases and I can't see any smoke. If it is smoking in either case it is not enough for me to see as being the driver. But yesterday as I came off the interstate I could see it smoking then for sure while I was at a dead stop idling. I dropped by my moms house which wasn't that far away and I reved it up and it smoked then but was not as bad.