Not really, guys were getting massive relief 5w30 redline to 0w30 redline with near identical additive packages pre new forumula, and 5w30 redline to PUP anything. Mind you this is about cold piston slap and not hemi tick which is oiled different. I am doubting additives can correct something that far out of tolerances, with exception to perhaps something like mos2 which would actually fill in the gaps. No testing that I am aware of mos2 and piston slap, in theory perhaps? But thinner oils have worked since the first guy who reported this 2016hemiram or something sorry I forget the members avatar had this issue with 5w30 redline, which has been proven many times a suspect in cold piston slap. The bottom line, different oil strategies for different situations have proven effective for many or most rams, sadly not yours bbrother.
Fix hemi tick best you can is goal one, and "try" and avoid cold piston slap if you can. For each ram this might be a different product.
That's what makes these noises so fun, everyone has different results. I really wished thinner oils worked for me, they don't which is why I've tried so many different variations. I solved my noisy valve train with the first batch of Redline I used, every oil change after (6 or 7 since then) has been a different brand and/or viscosity with the hope that it would fix the piston slap but nothing has worked until my current oil which is 5w-20. I've used RL 0w- 30. Not a single bit of difference.
It's even possible that the reports we're hearing on the board here are different noises. We all know how often "tick" is referred to for different things, possibly one or more of us are using "piston slap" for different noises as well.
But in any case, my original point was that a different viscosity won't change the speed at which the engine is pressurized and lubed or reaching the bearings (and piston slap isn't a bearing thing in the first place, it's just the piston contacting the cylinder wall). The time it takes to pressurize an engine is measured in seconds, but it can take 5+ minutes of idling before that noise clears up in my engine.
So if it was purely a viscosity thing that was helping because it reached a critical part of the engine sooner with thinner oil, then why would it still take 5+ minutes for the sound to go away when the engine is fully pressurized after a second or two? There is no way it's taking 5+ minutes for oil to reach some critical part?