Yes sir.
0W-40 Pennzoil Ultra Platinum.
From what I’ve read from people trying to quiet the “Hemi Tick” with 5W-40, it will throw codes because the MDS and/or cam phaser stuff doesn’t play well with them.
There has been the odd case where guys with a 5.7L that spec's 5w-20 have run a heavier oil and got the visc out of spec CEL. Former member Clevy ran 0w-40 in his '06 Charger R/T that spec'd 5w-20 and when it was like -35C he managed to get the code. It was fine the rest of the year.
This isn't going to happen on an engine that specs 0w-40 already like the 6.4L, both SRT and non unless you put like 10w-60 in it.
The ECM infers viscosity from oil pressure and temperature, and there's a liberal fudge factor applied to account for shear, variance between oils...etc. That's why a 5w-30 won't set the code in a truck that specs 5w-20.
Most of the time "HEMI Tick" is an exhaust leak. That's been the case for every single one of our work trucks, all of which needed the passenger side manifold planed and new studs installed. That said, these engines don't have super quiet valvetrains, if you look at them and the geometry, it's clear as to why, the setup isn't conducive to whisper quiet operation, and there's nothing wrong with that.
There is the rare case where an engine may have some non-exhaust noise that could be valvetrain, piston slap...etc. That does not mean there is a lifter issue. In fact, the one truck that we had lifter failure on at about 200,000 miles didn't have any sort of tick, it was a "chirp" sound, otherwise, everything sounded normal. This is not unusual for an engine where a lifter has failed (the chirp), but there's a whole lotta lore written about the tick being a failing lifter, and Redline being the silver bullet to "cure" it, despite it being utterly impossible for a mechanical failure already underway to be stopped, or reversed, by oil selection.
makes sense… makes total sense.
