Mobil 1 High Performance 15W-50 No Longer Made - What To Use?

[PeterBergin at aol.com]

I just bought the new formula Mobile one 15-50 last week.  I think they just 
made a slight change to its chemistry.  If not Amsoil makes a highly rated 
15-50, only draw back is that it is a little harder to shop for.

Pete