I just finished running an Auto-RX cleaning and am now on the rinse phase. The vehicle is a 97' Ford Ranger 2.3. When I bought the vehicle in August with 73K I asked the previous owner if it used any oil and he said "a little". I drove it home and changed the oil (Shell dino) and added Auto-RX. During the first 1000 miles I had to add oil twice (approx. 8 ounces each time). For the next 1500 miles I didn't have to add any oil. I may be wrong but I feel that the Auto-RX cleaned out the ringpack or rejuvinated the seals thus cutting the oil consumption. I'm a believer in Auto-RX.
PS: I'm using Supertech dino for the rinse phase.
PS: I'm using Supertech dino for the rinse phase.