Well, I've been using Red Line 5w/30 in my 5.7 HEMI engine on the last four oil changes(@3000 mile oci's), started the fifth about a week ago.
I was using Pennzoil Ultra/Platinum, 5w/20 and 30 when my truck was new, @every 3000 mile oci's.
My HEMI never had/currently doesn't have the "tick" and moving to Red Line 5w/30 was just an preventive approach to an possibilty of keeping the lifter/cam "monster" from rearing it's ugly head.
I've read, here in the RAMforum, about the benefits of oils with higher molybdenum/zddp additives that could help my engine and made the switch to Red Line 5w/30.
My HEMI engine(currently at ~54,000 miles)has the occasional "dry start up" clatter, but other than that, it's still quiet for the most part and hopefully will continue ...
I've sent in my recent oil sample to Blackstone Labs(10/28/24)and will post the results over on the Blackstone Labs thread.
Hammer down and happy motoring!