I have been using ARX in my cars for a while now with great results. My brother has a 2002 Lancer with 110K miles. He doesn't like spending money on the car, so for the heck of it I put in a maintenance dose(from my own bottle) w/ Mobil Clean 5000. 3K miles later, the oil is dark and there has been ZERO consumption. The car usually burns a qt every 3K miles. Needless to say, I'm thoroughly impressed and so is my brother. I'm going to try and convince him to do a full clean/rinse soon for maximum benefits. But for now, I'm happy and very impressed.