They all share the same dynamics printed below. There is no variation in results when application is followed.
These engines benefited in it's internal oil lubricated engine parts being cleaned thereby being able to be lubricated. Thats why you use Auto-Rx to get these type results.
Remember oil-oil additives can't lubricate through metal covered by dirt-contaminants-sludge. Most engines suffer from one form or another of dirty metal. When you start replacing parts because of oil starvation, you should have been using Auto-Rx.
No oil can clean deep down enough to be effective if they did you would not have oil any more just toxic solvents & and no performance in lubrication.
