Gun Slinger
member
- Joined
- Jul 25, 2007
- Messages
- 777
Halo,
The synthetic Mobil 1 motorcycle oils remain purely Group IV (PAO's) at this time however, the remainder of their automotive oils have changed formulation to Group III fairly recently as confirmed by their corporate office just three weeks ago. They indicated during that communication that the motorcycle oils (20W50 VTWIN and 10W40 MX4T) will remain Group IV for the foreseeable future since they require the properties of a Group IV due to the operating environmment that these oils are subjected to and the fact that there is such a high demand for the Group IV formulation. My suspicion after digging around and asking some of those within the industry leads me to believe that Amsoil obtains their PAO basestock supply from Exxon-Mobil. Unsure of what they could be doing to it in terms of processing that would make it "superior" to M1.
The synthetic Mobil 1 motorcycle oils remain purely Group IV (PAO's) at this time however, the remainder of their automotive oils have changed formulation to Group III fairly recently as confirmed by their corporate office just three weeks ago. They indicated during that communication that the motorcycle oils (20W50 VTWIN and 10W40 MX4T) will remain Group IV for the foreseeable future since they require the properties of a Group IV due to the operating environmment that these oils are subjected to and the fact that there is such a high demand for the Group IV formulation. My suspicion after digging around and asking some of those within the industry leads me to believe that Amsoil obtains their PAO basestock supply from Exxon-Mobil. Unsure of what they could be doing to it in terms of processing that would make it "superior" to M1.