Good chart and info of who makes who's oil filters
http://minimopar.knizefamily.net/oil...reference.html
When Mobil one took more of the zinc content out I switched to Rotella oil because of their higher zinc content. Now most of that has been removed to make it more green, I Run Red line racing wt 30 in my race engs and Rotella in my street stuff and hod rod stuff
The way the Oil Co's are pulling zinc out , looks like Classic High perf eng oil is the way to go if running a solid roller or solid flat tappet cam