I have built many motors of all different sizes, and have never killed a cam !! and after reading all this crap. I'm confused! To much about nothing

I use farm tractor or Diesel grade oil, it has zink in it, there are others also, I use to break in my motors, (1st 3-500 miles on a street motor) then you can switch to synthetic. And use light valve springs & stock rockers till the cam & lifters are broke in.

Google flat tappet breakin and you'll find many more oils to use, and a lot better info!!!!!!!

Pat