The short answer to your question is yes. There is no incompatibility between the two products. To the best of my knowledge this is basically the standard M1, PAO, base, with some esters added to accept the additive package used in the ESP, diesel series. Primarily it was formulated to help the most modern diesel emission systems, but also has some elevated, boundary lubricant protections in place for high performance diesels. The product has been widely accepted in gasoline motor as well.
I think this would be a great oil to run the maintenance dose for continued cleaning or the prevention of ring deposits from forming in the first place. If you are looking to clean up a very dirty motor with substantial deposits, then it wouldnt be my top choice for a basic cleaning. As I mentioned in my first paragraph this Mobil product does contain a fairly high level of esters used to couple in the additive packages of the oil. Esters by nature have a polar attraction to metal surfaces. However the esters used in this oil dont have any cleaning ability. On the other hand Auto-Rx is made completely of esters, designed for cleaning as well as lubricity. Therefore you have the coupling esters of the oil competing for the surface of ferrous metal parts at the same time that you are trying to get the cleaning esters of Auto-Rx to the metal surfaces. So they compete to a degree. This tends to slow down the Auto-Rx cleaning action. So if you plan to run Auto-Rx in a basic cleaning application with a group IV oil such as Mobil 1 esp, then we recommend that you drive the vehicle 4000-4500 miles in the cleaning phase of the application to achieve better effectiveness.
I know nothing about what your vehicle is, condition, or needs for Auto-Rx, so it is hard to pin point an answer for you. If your engine is really dirty I would recommend choosing a group III oil, containing little to no esters and accomplish the cleaning process in the 3000 mile range each for cleansing and rinse.
I hope this information is useful. Please reply back with any more questions that you may have.
