My girlfriend's Impala with the 3.8L engine is burning oil and I was wondering if I should worry about it. I know every engine will burn a little because the top of the engine need lubricated but her car burns more than a little in my mind. We recently took an 1,100 mile round trip journey to Denver and the car burned nearly a quart of oil. That seemed like a lot to me because my truck and my motorcycle would never burn that much. The engine sounds smooth with no odd noises, smells or smoke and power seems good. Everything seems healthy other than the oil level dropping. I am not anti-dino but I am a big fan of synthetics and I would like to run synthetic in the engine but if it is going to burn it all off, I can't see spending the money. Is there a chance that a switch to synthetic would reduce consumption? I can't see why it would reduce consumption that much but I am looking for anything.