Originally Posted by SSmbs
Looked at the Mobil 1 ESP on the NAPA site and it says for gasoline engines???
You are correct sir. What MB has done is in conjunction with Mobil is, agree to recommend that synthetic, since the previous one, 5w40 is no longer distributed in the US. Also, making the new one suitable for gasoline engines, which allows mobil to sell more of it. The previous oil had the moniker "formula M" meaning for Mercedes (diesel). You can just bet how much of that stuff got sold after spending oodles of formulation and testing with MB engineers. So, marketers step in and wella, the magic wand is waived, and we have a new recommended oil, broader use, different viscosity, etc. all is good, MAYBE. Just sayin'