North Carolina
Mobil 1 EP 5W-20 or 5W-30, Mobil 1 FS 0W-40, all good oils, you can find any of them at Walmart. If you want something that's truly beefy and in every way better than the "mythical" Red Line 5W-30 that RamForum talks about, then HPL NO-VII 5W-30 Euro is what you want. It's not cheap though, but it's worth the money. I'm running it in my 2022 Dodge Durango.
Rotella Gas Truck was just rebottled Quaker State Synthetic. Just buy QS FS and you'll get the same thing.
Rotella T6 5W-30 is not what you really want in a daily driven HEMI. It's a Diesel oil that also works in Gas engines.
A lot of bad information is being perpetuated on RamForum, and some of the moderators are complicit. Like for example that the HEMI has a lubrication flaw, and that you need to run Red Line 5W-30 to keep your HEMI in good shape. All a bunch of nonsense. @OVERKILL explained it best just the other night, when he posted a diagram of a lifter and how it gets oil: https://bobistheoilguy.com/forums/t...-deactivation-well.365056/page-3#post-6384224
That's a separate passage. But it's important to note that the MDS lifters are reverse oiled from the adjacent cylinder because they are an inverted "lifter inside a lifter", so they don't have the same conventional oil path because the MDS pin assembly is in the way, so the inverted lifter is "pumped up" by the adjacent conventional lifter.
This diagram shows that, but it also shows the hole I mentioned where oil could, through the traditional oil band, make its way onto the roller IF that hole is present. However, the pictures I've seen have not been consistent with the presence of this hole, so I'm hesitant to state, definitively, that this is also a way the roller is oiled, while we do know for sure that excess oil coming off the body is definitely going onto the pins and roller.
So you would have no problem running 5W-30 in a 2015 HEMI in hot weather? It's not going to throw any codes, and my neighbors won't call the cops??The bottom line with the HEMI is this: Run whatever oil you like in it, within reason (don't go for 15W-50 unless you're trying to cross the Sahara or something). Perform a reasonable OCI and use a reputable oil filter. That's all there is to it. And please, be as picky as you like.
Currently we got AMSOIL SS 5W-30 in the HEMI. I just wanted to give it a try, since I'm running a 180F thermostat in it, I wanted a slightly thinner oil than 0W-40. I doubt it performs any better than Mobil 1 EP 5W-30, so don't read too much into it.
That's what I've been running since day 1. (Pennzoil Platinum 5W-20).
Yes
