I drive a 1994 Saturn Coupe and for the past year has been burning oil, to the point, that I had to add a quart of oil every week. I had the car in to my mechanic for a different problem, but mentioned to him about the amount of oil my car was burning. He was the one that mentioned putting the Lucas Synthetic oil treatment into the oil. We tried it, and after a week and a half of driving 100 km a day, the oil is still a the full mark and is still a light colour. Best thing I was ever put on to.