Engine Performance problem
2001 Toyota Avalon 6 cyl Front Wheel Drive Automatic 135000 miles
While I was overseas on military duty, my wife failed to have the oil changed in the car. Now it seems to be burning oil. I just got back two weeks ago and I added 2 quarts of oil to fill in to the full line. Today I checked it and added 2 quartz again. It is still 1 quart low. When she cranks it, white smoke comes out of the tail pipe. I am going to change the oil today, but what is the root of the problem here? Is the car actually burning oil? Also the engine light is on. The bank 1 sensor needs replaced< could this be why the white smoke comes out?