What you are describing is classic valve stem & valve guide wear. There are small seals on the valves that restrict oil from entering the manifolds. When these seals and stems deteriorate hot thin oil will by pass the seals and a little will enter the exhaust manifold and the inlet manifold over night. When you start up this will show up as a plume of bluish smoke that will normally clear quickly. There will be a small on going oil consumption through there seals during driving but normally in such small concentrations that it is not readily visible, if it is there is a bigger problem, (rings) also involved. There is no short cut repair, I feel that the previous owner has use a temp stop smoke additive (this swells the seals in an attempt to stop oil passing) but this can do more harm than good in the long term. Best get a mechanic to do a comp test and get an engine vacuum reading this will give them a better understanding as to what is going on internally.
Tuesday, December 18th, 2007 AT 3:22 PM