I have heard differing opinions on this question and wanted to ask the experts out there. Also, what weight of oil would you suggest?
bad info.. deisel oils DON't have it and haven't since 2010ZDDP is what its commonly called. zinc is just one part of it. Motorcycle oils still have zddp same goes for rotella and a few of the desiel oils. They are recommended for cam break in.
Normal car oil no longer has zddp in it. Not sure about royal purple and the performace synthetics.
I haven't been able to pin down the first automotive roller cam. I know the first automotive hemi was the 1912 Peugeot Grand Prix motor.A lot of young hot rodders and enthusiasts think roller cams are a new innovation! Jester