What oil, What weight?

I just read that article a few days ago. To sum up, racing oils and diesel rated oils (Rotella by Shell) still have adequate amounts of additives (Zinc and magnesium or phosphorous, I believe) to properly lubricate flat tappet cams. The commercial name brand stuff can cause lower life on HP flat tappet cams and are a definite no-no for cam break-in. The above mentioned chemicals have been gradually removed for emission purposes and the greater frequency of factory roller cams. I'd still find a way to read the article, since it talks about other factors related to cam failures (cheap off-shore lifters, spring pressures, opening/closing rates, etc.).