2024 6.4 oil pressure low at idle?

[631blackfin]

Bought a new 2024 leftover tradesman 2500 4.10 gears 6.4 hemi back in January. Had 39 miles on it when I left the dealer.

I have since broken the engine in ( to the best of my ability ) did an oil change at 1000 miles went with wix filter and mobil 1 0w-40. Truck has just under 2000 miles on it now.

I’m alittle concerned with the idle oil pressure when warm. It’s anywhere from 26-30psi. Tends to stay at 26-27 usually though. Sometimes when in park it bumps up to 28-30psi. Anything above idle and it climbs to 50+ psi easily. Not overly concerned just seems a bit on the low side to me especially since it hasn’t even seen summer temps yet or any heavy towing. Temps have been 20-55*F out.

I do tow everyday for work pretty much but hasn’t been anything heavy yet. 6x12 trailer (3-4K lbs) I tow regularly and a few boats below 25’.

Engine sounds fine. I know these engines run on the hot side ( I see 210-220 regularly and even seen 230 on the highway) but it’s drops very quickly back down to low 200s. Oil temp has never been over 230* get. I’ve owned 5 1500 ram 5.7 hemis from 2014-2022 and never noticed the oil pressure be that low. Obviously it’s a different engine and 5/20, 0/20 vs 0/40 just saying though.

Sound normal? I thought I saw somewhere that spec is 4 psi at idle minimum! That is wild. My buddy has identical truck but with over 30k miles and identical temps he’s at 29 psi as idle. ‍

My old big blocks in my
Blackfin don’t even get that low after chugging along at 3200 rpm all day!

 

[631blackfin]

Bump…

 

[Riccochet]

That sounds normal to me.

 

[631blackfin]

The more I’ve researched the more I’ve found that they do run in the 20s at hot idle for oil pressure. Just seems a bit low to me especially since it hasn’t hit summer yet and I haven’t really pushed the truck at all.

Maybe has something to do with where the sender location is.

Wondering if the mods can move this thread to the 6.4 power train discussion.

 

[Chris1911]

When my 2019 first starts, it's in the low 50s then settles down into the high 30s. While driving, it stays in the 50s. Coolant temp seems to range from 203 to 218, with the oil temps just a little higher than that.

 

[631blackfin]

My 2024 does the same. Over 50+ when cold start or while driving around. But once up to temp and at idle usually 26-27psi

 

[jimk]

Hot idle on mine stays at 28 psi. By the way, I’d recommend using an oil with higher moly than Mobil1. The 6.4 Hemis need moly and the factory recommended 0W40 Pennzoil oil has a good amount for that reason.

 

[631blackfin]

Hot idle on mine stays at 28 psi. By the way, I’d recommend using an oil with higher moly than Mobil1. The 6.4 Hemis need moly and the factory recommended 0W40 Pennzoil oil has a good amount for that reason.

How much higher are the moly levels in pup vs m1? I believe Mobil 1 euro 0w40 is now an API SP oil and the forums is alittle different than a few years back. I found a bunch of hot shot guys with these trucks all well over 100k using m1.

To me the whole cam/lifter ordeal is hit or miss and just bad manufactured parts from a sub par supplier. Id imagine any current synthetic oil with a good OCI would prevent any premature failure. Plenty of guys out there chanting there oil regularly from day 1 still having cam/lifter failure so I gave up reading into that. If it happens hopefully it happens to me under 5 years or 60k