Shell ROTELLA T- Approvals and Recommendations (Old Formula)
API CI-4 PLUS, CI-4, CH-4, CG-4, CF-4, CF (Diesel Specs)
API SL, SJ, SH (Gasoline Specs)
While called a DIESEL OIL, if marked as above with both DIESEL and GASOLINE SPECS, the oil is formulated to be used in either engine type.
(The above is only describing old formulation SHELL ROTELLA T)
The new formulation is CJ-4/SM and does not have the zinc package, so make sure you look at the specification when you pick up the container. It is confusing as SHELL is not changing the package appearance along with the new formulation.
SHELL has announced the CI-4 formualtion will still be available but most likely will not be found in retail outlets. You will most likely have to find a SHELL LUBRICANTS distributor in your area or order it online.
From http://www.shell.com/home/Framework?siteId=rotella-en&FC2=/rotella-en/html/iwgen/ask_our_expert/zzz_lhn.html&FC3=/rotella-en/html/iwgen/ask_our_expert/answercolumn_0506.html
SHELL ANSWER COLUMN
Q What is the new API CJ-4 all about?
A Shell has qualified the next generation of Shell ROTELLA® T to meet the new API CJ-4 service category for diesel motor oil. This new performance category is required for 2007 model year on-highway diesel engines. The oil is also suitable for use in pre-2007 on-highway diesel engines.
The new API CJ-4 category, previously referred to as PC-10, is designed to help protect against engine wear, piston deposits, soot, high temperatures, oil foaming and aeration, viscosity loss due to shear and minimize blocking of the Diesel Particulate Filter (DPF).
A critical feature in the new API CJ-4 category is com-patibility with exhaust after-treatment devices such as a Diesel Particulate Filter (DPF) that will be used in vehicles meeting 2007 diesel emission requirements.
Changes to the formulation of diesel motor oil were required to meet the new standards. API CJ-4 diesel engine oil in combination with Ultra-Low Sulfur Diesel (ULSD) fuel, with a maximum sulfur content of 15 parts per million, will be necessary to maintain the durability and performance of a DPF.
Priority was also given to maintaining a high level of oil performance in new and existing engines that had been established by previous API categories. API CJ-4 engine oil can be used in pre-2007 diesel engines.
While compatibility with DPFs is the primary reason API CJ-4 was developed, overall oil performance was also enhanced in several key areas that will benefit new and current diesel engines. Improvements were also made to provide increased soot-related viscosity control, increased control of piston deposits and oil consumption and better wear protection.
As an industry leader, Shell is at the forefront in the development of lubricants world wide. Our new formulation, Shell ROTELLA® T with Triple Protection technology, was developed through millions of miles in 2007 on-highway diesel engines, as well as in current diesel engines.
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