Pretty sure the Rotella no longer has a High Zinc content....least that is what some folks are saying....but take what I am saying with a grain of salt please. These oil discussions get old after a while. I really wish someone would post the zinc levels of the Rotella T that is available now. Only stands to reason, and I know that is a dangerous thing to do that with diesels having cat convertors in them, at least that is what I am reading, that the Rotella may have the zinc reduced.
I have browsed thru several different reads that claim the scare about using an oil with the lower zinc content is exactly that, nothing but a scare....after break in that is.