Thank you for the information. I will take it into serious consideration.
With regards to Redline, I must have made an error when stating the background of my query. I was not aware of what you experienced on the ram forum. I never faced such issues and No one gave me false information. The advice I got was accurate and did help me immensely. To be fair, I've not read a single thread that called RL a necessity. I've gone through the whole 4000 page thread. Most of it talks about RL being one of the best, if not the best for the Hemi engine. However most use PUP or Mobil 1 in their engines. If they hear a tick, then suggestion is to use RL so that it goes away. There is quite a lot of talk about finding an oil that is as good as RL, but doesn't cost as much.
Ram forum isn't the only one that paints such a picture of RL. I've looked at a number of forums involving Mopar products and the Hemi engine and all of them say the same thing. If not RL, there is talk of using an additive called Lubegard Biotech.
I cannot say for anyone from other parts of the world, but over here in Dubai, servicing at the dealership is compulsory; otherwise you void the warranty. So as a result, we have no say on what oil is used for the first 3 years of ownership. And while the car is at the dealership for service, we aren't even allowed to observe while it is being done. So even if we demanded that the dealership used the oil we chose, we have no way of proving they actually listened to us or not.
So by the time the warranty is out, our engines are definitely compromised because they would have been using 5w20 in this 50.C heat. Most owners are ignorant of it, until there is a tick and we have to change the lifters.
In my personal experience, I've heard my engine run with other oils. The engine really does sound great with RL in it and if I can, I would use it. But right now it is not in stock. So I need to find something to use till it comes back in stock.
If I had control over the servicing of a brand new engine from the very beginning, I would definitely use something else like Mobil 1 0W40 or Castrol Edge 0W40.
My brother's 2004 Durango uses the same engine with MDS since his owners manual called for 5w30, that is what was used from the very beginning and for 300,000kms it ran without a single issue or tick. The same for quite a few other Hemi Chrysler products of that era. So I'm convinced that the usage of Mobil 1 0W40 would be good enough for any new Hemi engine.