[WarrenG]

I just bought two gallons of Rotella T for my 289 and the label on the back states that it meets the requirements of API CJ-4 and CI-4 plus. I use Rotella T at the recommendation of the engine builder. I check back with him every year to make sure that he hasn't changed his recommedation and the answer has always been the same, keep using the Rotella T.