Delo or Rotella T more additives

[e anderson]

What oil Delo or Rotella T has more anti wear additives (zinc) for the older Flat Tappet Cams. Or are these oils almost the same? thanks.

 

[Steve S]

Look up the used oil or virgin oil anaylsis'

 

[m2200b]

I'd go with delo and its heavy moly. I'm sure shell has some equivalent but I'm no chemist so at least I know I'm as close to Redline as I can afford.