No i didn't, but that means nothing if the base stock they get from them is a different one than M! uses in thier own motorcycle oil. Mobil likely makes many different base stocks and uses them or sells them according to what prices are paid. You can buy a PRS guitar for $5000 or buy one that looks just like it, same brand, but made in china or some such place for about $500. The fact they look the same means nothing, as they are not the same at all. Now in the case of M1, the buyer may spec a top of the line synth base and Mobil will sell it to them, but that doesn't mean mobil will use that same base in thier bike oil. If they must compete with others like castrol who can thier dino oil synthetic, how do they compete if they use more expensive to produce true synth base?
i don't know oil, but i do understand how products are marketed and the fact (assuming it is) that mobil supplies others with thier base stocks in and of itself means nothing. the truth is in the details.