I tend to run VR-1 in my cars, 20w-50 during hot months...
OR rotella...

However...I will say one thing....
I have an 87 Ramcharger that I installed a rebuilt 440...when i broke the engine in I did the usual...run at different rpms for 1/2 hour holding, and used straight30w detergent oil....HOWEVER, since then, it gets whatever cheap-ass-shitty oil I can buy on discount from whatever store....it was my daily driver from 98-07 with that engine....now its a plow truck, but the engine starts and runs just fine...all this zinc talk...and the cheap oil never had ANY effect on the 440.....maybe its just a testament to how great Mopar engines are...

Rick