My grandson just got a Jeep GC Overland 4X4 Hemi V8. The cap says to use 5-20 motor oil and I'm wondering with 140K miles and Fla temps near 100 would it be benificial to go to a 5-30 (synthetic) oil. I've heard reasons not to like lifter issues and cam phaser issues because of the 30W oil. Anyone do this with issues or is it working OK?
Motor oil for Hemi with 140k miles
- Thread starter weldor
- Start date
FWIW, my son is running M1 5w30 in his 2023 Ram 1500 with a Hemi. It doesn't seem to mind it at all.
Just my $0.02
Just my $0.02
Given the soft camshafts and iffy lifters of the HEMI, in combination with mileage and ambient temps - I'd use Mobil1 0W-40/5W-40, or Castrol Edge 0W-40/5W-40, or any other oil that meets A3/B4 spec.
Thats the best route.
No oil will mitigate damage due to poor metallurgy.
That said, I run 30 and 40 grade in my 5.7 -
Currently Castrol Euro 5w-40.
BTW, Florida heat is no too hot for any engine.
That said, I run 30 and 40 grade in my 5.7 -
Currently Castrol Euro 5w-40.
BTW, Florida heat is no too hot for any engine.
Triple_Se7en
$50 Site Donor 2024
No mention of climate or location by thread-starter.
Need more info please.
Need more info please.
Triple_Se7en
$50 Site Donor 2024
Mobil-1 Euro 0w40 in SP (@ Walmart)
Red Siicone ADBV Oil Filter. STP, Carquest, NAPA..... all fine to use.
Change oil every 5k.
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Not really. Engine coolant and oil temps are usually double any ambient temps unless OP is in Death Valley, and even then, ambient temps would still be cooling the oil.
I agree wholeheartedly with the M1 FS 0w40 crowd, because while no oil will fix the lifter manufacturing defects or soft lobes on 5.7 camshafts, maintaining a high enough HTHS & MOFT will at least not hasten the engine’s demise.
OVERKILL
$100 Site Donor 2021
What year is the vehicle? Lifter issue was supposedly fixed ~2018. If it's between 2011 and 2018, well, it's the luck of the draw whether you got a bad one in there or not.
Running heavier oil isn't going to hurt, and if you are going to stray, M1 0W-40 is hard to beat.
Running heavier oil isn't going to hurt, and if you are going to stray, M1 0W-40 is hard to beat.
I’ve used 5w30 all but 1 oci for over 40k miles.
I run 0w30 Euro in my 5.7 Hemi, very quiet, engine seems to love it. Been running it for the past year now
I noticed the 5w40 doesn't have the chrysler spe the 0w40 does..,..... matter at all ????
I was running M1 5w30 and recently switched to M1 0w-40 in my 2013 Ram 1500 5.7 with 102K, 5k OCIs. Both oils have worked well for me. I’m near Austin, Texas.
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