My car use a lot of oil and leaks oil, I have to put in oil about every 2 weeks. When I start the car to drive it, it have a lot of white/blue smoke for a few seconds then it is gone. If I start the car then it is making a little noise but after I let the engine run for a minute or so before driving off the noise is gone. I have changed the spark plugs. Otherwise the car is running smoothly, does not overheat or have any other problems. Maybe the engine needs to be overhauled. It have 169000km on the clock.