Oil Additives Solid Cam??

The 800 ppm phosphorus limit is for Starburst oils (ie oil meeting the requirement of ILSAC GF-4). API CJ-4 limits phosphorus to 1200 ppm.

http://www.apicj-4.org/performance_specs.html

Shell does not list phosphorus content on the Rotella T CJ-4 data sheet. There is more to an engine oil than phosphorus content and Shell states that their CJ-4 Rotella T has significantly more anti-wear protection than CI-4+ Rotella T.

Are you sure that Rotella T has a maximum of 800 ppm of phosphorus?