Rotella T is still a high zinc and phosphorus oil and the Mobil 1 synthetic 20-50 is a high zinc and phosphorus oil also. It says this right on the back of the Mobil 1 bottle and also explains any of their racing oils will have the twin checkered flag symbol letting you know this.

2000 Dakota R/T, 408 magnum, 727, Indy heads
1000cfm 4150 carb, 93 octane fuel.
motor; 10.258 @ 132.78
200 shot; 9.262 @ 144.69
racemagnum