Perhaps you could offer some clarification then, because it looked like you were attributing the performance of an oil to its base stock. I must have got this idea by you talking about base stock, and literally nothing else.
Absolutely I was. You can't get as low a pour point with a group III and especially with a dino, no matter the add pack. I don't see what's so hard to understand about that. You can't get as high a flash point, either.
I would stick with the 0w20, especially while the Jeep is still under warranty. You may want to try a higher quality oil. This is what I use.
I doubt it. The 0w20's on the market should all be SN+ by now, so if they could have an effect, you'd already see it. I think LSPI (Low Speed Pre Ignition) that is common to DI/turbo engines is a different animal than what is going on in your 3.6. I'd have the dealer address it.
Took it to the dealer. Twice. They say they can't hear it which is bullshit.
To tack onto what Dan said, you may want to try a fuel cleaner that has a healthy dose of PEA (Gumout All in One, for example) to see if it helps. I am not sure how many miles you have on your 2019, but it would be strange for carbon to be the cause of pre-ignition this early in the game, but you never know. I am surprised (or maybe not) the techs could not replicate the problem since the service writer could. 3.6L Pentastars do not have the issues that require an SN+ oil like the 2.0T engines do, so I doubt the oil is the issue, but you could always try another brand.
How do you define high quality oil? I couldn't find any engine manufacturers that recommend Amsoil and their 25,000 mile change interval is outrageous.
I wouldn't go 25,000 miles no matter how good the oil was. That said, I have my preferences but would personally have no problem using any name brand oil that meets specifications.How do you define high quality oil? I couldn't find any engine manufacturers that recommend Amsoil and their 25,000 mile change interval is outrageous.
