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I had heard that the new Rotella T has a lower content ZDDP. Those numbers look like what the older stuff had. Do you know how recently the Rotella was purchased?


The older Rotella is CI. The later with the reduced ZDDP is CJ.

So, the jug of Valvoline Premium Blue heavy duty diesel engine oil 15-40 I have says on the lable;

exceeds
API SERVICES CJ-4, CI-4 PLUS, CI-4 CH-4, CG-4, CF-4, CF/SM.

So, just what is what? It has both ci and cj, not to mention ch, cg, cf and cf/sm. What does all that mean?

Tom

"Everyone should believe in something; I believe I'll go fishing."

-Henry David Thoreau

Men and fish are alike. They both get into trouble when they open their mouths

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