After sitting idle for a few hours (or even sooner then that sometimes), my 2000 Lexus RX300 puts out bluish white smoke from the exhaust. The vehicle also burns up a lot of oil as well. The amount depends on how long and hard it is driving, usually eats put a quart or two after driving 2 hrs on the highway.
Taken it to several shops and been told the engine is very sludged up. But never given an exct cause to either problem.