I just got back an email reply from Shell after asking if they will be continuing to make CI-4+ Rotella T Synthetic 5w40. Here is their reply:
Tom, we plan on introducing Rotella T Synthetic 5W-40 CJ-4 in October
of this year. At that time we will no longer make the CI-4 Plus version.
Thank you for your interest in Shell products.
Richard Moore
Staff Engineer
Shell Global Solutions (US) Inc.
I also sent a simular email to Mobil, and will post their reply here when I receive it.
Tom, we plan on introducing Rotella T Synthetic 5W-40 CJ-4 in October
of this year. At that time we will no longer make the CI-4 Plus version.
Thank you for your interest in Shell products.
Richard Moore
Staff Engineer
Shell Global Solutions (US) Inc.
I also sent a simular email to Mobil, and will post their reply here when I receive it.