Originally Posted By: gmh101357
yes
Honestly, IMHO Mobil Super Synthetic has no place in the M1 line-up these days. The only places that **normally** carry it are auto parts stores and it tends to be very expensive compared to M1 at box stores. As for differences, I believe that MSS has less PAO than M1 and MSS has a titanium/sodium based additive package whereas M1 has a moly/boron based package. M1 also has a slightly higher starting TBN. Is MSS good oil? Sure, no problems there, but is M1 better? Likely yes--for the money and the fact that M1 has been rated for 10K OCIs (at one point) indicates to me that Mobil believes that M1 is better than MSS.