OP stated his Ram 1500 is V6, which is the Pentastar 3.6L that seems fine on most any oil from what I've read.
The oil cooler leaks however...
The 5/40 oils
- Thread starter Bullwinkle007
- Start date
The oil cooler leaks however...
OVERKILL
$100 Site Donor 2021
It's a Pentastar, not a HEMI, and that problem was supposedly solved with yet another lifter revision in 2018
It's a Pentastar, not a HEMI, and that problem was supposedly solved with yet another lifter revision in 2018
2018+ shouldn't have lifter problems then? I may look closer at those.
The later years of that generation seem to be pretty solid trucks otherwise. Unfortunately no Pentastars in the 4th gen truck are rated to tow what I need to tow. Otherwise there's a lot of those in my price range.
OVERKILL
$100 Site Donor 2021
Correct. Our '19 is supposed to have the updated lifters.
what conceivable benefit does any 5w-40 have over M1 0w-40?
edyvw
$50 site donor 2025
Potentially better-shearing stability and higher HTHS.
like a real benefit that would make someone change oils? or hair-splitting?
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How does almost 7 OCI'S within 5k miles help anything. TCB anyone?
edyvw
$50 site donor 2025
Shearing stability and higher HTHS are real benefits.
4WD
$50 site donor 2025
He’s making Mr. May look wild
4WD
$50 site donor 2025
Hope you are right - I’m not seeing any change in oil pressure with the M1 Supercar - and IIRC - the VVT is ECM controlled anyway …and that problem was supposedly solved with yet another lifter revision in 2018
Cant be. It was written here millions of times that M1 0w-40 is THE best Oil and that Porsche uses 0w-40 for a reason.
0w-40 = Racing stuff! Race proven! Porsche Proven!
edyvw
$50 site donor 2025
Ican and it cannot. Everything depends on how good is 0W40 or 5W40. That is why I said "potentially."Cant be. It was written here millions of times that M1 0w-40 is THE best Oil and that Porsche uses 0w-40 for a reason.
0w-40 = Racing stuff! Race proven! Porsche Proven!
Mind if i join you
anyone?The answer is not really and no one knows if the 5W is better in any respects than the 0W. You would imagine the HTHS would be slightly higher but only Mobil knows. It could be a cost reduced / higher margin product than the 0W, who knows. The only thing we know is FS 5W-30, 0W-40, 5W-40, and X2 5W-50 now all use the same Infineum additive package. I was told this directly by an engineer there and that is both unsurprising and backed up by VOAs. Personally I’d just be choosing between the 0W-40 or 5W-50 depending on use case. I was told the 0W-40 and 5W-50 could be mixed as desired to create something in-between. Not sure I see the point but hey.
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Doesn't the Pentastar spec 5W20? MS 6395?
MS 6395 is an engine oil specification for many Chrysler, Dodge, Jeep, and Ram models, including those with 5.7L Hemi V8, 3.6L V6 gasoline, and 2.4L gasoline engines. It's available in a variety of viscosity options, such as SAE 0W20, 5W20, 5W30, and 10W30.
MS 6395 is an engine oil specification for many Chrysler, Dodge, Jeep, and Ram models, including those with 5.7L Hemi V8, 3.6L V6 gasoline, and 2.4L gasoline engines. It's available in a variety of viscosity options, such as SAE 0W20, 5W20, 5W30, and 10W30.
I've been using FS for many years. 0W-40 used to have its pour point at -60°C. It's now at -42°C which is typical for majority group III base oils. Similar story with 5W-40 and 5W-50. Corners had to be cut to keep the price from making leaps.
Additive package compatibility and solubility seem to be at least a partial driver. I doubt the old oils outperform the new versions but who knows.
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