That oil really sheared down too. 13.8
11.3..The MSDS shows 30-40% PAO and 50-60% GTL.
That should be pretty shear stable.....you'd think eh.
Mobil 1 FS 0w40, RAM 1500 5.7L HEMI 6000 mi, high FE
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11.3..The MSDS shows 30-40% PAO and 50-60% GTL.
That should be pretty shear stable.....you'd think eh.
You seem to forget that MG detergents are twice as effective as CA
So 1000 MG is the same as 2000 CA.
So the detergency is exactly the same as before.
You may want to re read my post. I clearly said even though the the ppm is different that doesnt mean the detergency strength is weaker than the previous version as they still have their 12.6 virgin tbn...You seem to forget that MG detergents are twice as effective as CA
So 1000 MG is the same as 2000 CA.
So the detergency is exactly the same as before.
5W20 should be stable. 5W30? No. Then 0W40? heck no! But HTHS is King, don't really get twisted about KV100.That oil really sheared down too. 13.8
The MSDS shows 30-40% PAO and 50-60% GTL.
That should be pretty shear stable.....you'd think eh.
Magsul overbase detergent boosting - a necessary EVIL for LSPI - generally not good stuff on S category engines.
IMO, I would never run a LL or EP oil unless I REALLY had to.
Some good reading:
https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018136138
Looks like it was too thick based on the other runs with lower vis oils. Coulda just been noise from a different add pak. No worries, just go back to your previous oils. .02.
With reference to my comment about modern oils being less robust than in the past, what I meant was not only the use of Group III and other non PAO base stocks, and the relatively low ZDDP, coupled with a high level of VII's and pour point depressants. In my opinion, an oil that shears fast, probably has a wide viscosity spread such as 0W-40 or 5W-50, 10W-60. They are in fact very well engineered oils, but I trust a more robust old school formulation. Heck, sometimes these modern formulations don't pour at all at temps below -30ºF, while simultaneously having a lower HTHS.
Yes, I know that AN base stocks can be great lubricants and are said to need lower ZDDP to achieve the same protection. Maybe I'm just "old school" and like what used to work very well at preventing oil related problems. We sure have a bunch of oil related engine problems in recent years...
I'd much rather have a simple 10W-30 old school PAO based oil with 1200PPM ZDDP and 3000 PPM calcium.
How do you typically drive your vehicle? High RPM acceleration daily? I see a lot of posts regarding concerns for indicators of engine wear. I doubt it’s much to do with oil. Those Scatpacks, Hellcats, and any run of the mill engine will all show wear when they are beat on. Harsh treatment and severe duty will always show wear.
Just noting that the, prior, reports looked "better" with an, apparently, thinner oil. (Exit vis). .02.
I see.
OVERKILL
$100 Site Donor 2021
Blackstone sometimes seems to measure low on visc:That oil really sheared down too. 13.8
The MSDS shows 30-40% PAO and 50-60% GTL.
That should be pretty shear stable.....you'd think eh.
https://bobistheoilguy.com/forums/t...56-398-total-3-labs-1-with-pc-tan-tbn.365649/
@RDY4WAR has noted the same thing, with it being off almost a full cSt in his case.
Not sure why this is the case
^^ This!
In my experience, there is no effective replacement for ZDDP. Under heavy load, low ZDDP = high wear. Newer oil formulations are being deprived of proper levels of this crucial anti-wear additive by edict. Unfortunately, most (if not all) of the good, high ZDDP oils are being/have been discontinued.
Other than racing oils and specialty break-in oils, are there any current mainstream PCMO's (30 or 40 grade) left with Zn/P over 1,200 ppm?
- Redline 0W-40 has ~1200 ppm Zn/P but at $20/qt it's hard to consider it mainstream.
- Amazon Basics Euro 0W-40 has ~1,300 ppm but is no longer available (glad I have a stash)
- Everything else I could find is at or below 1,000 ppm.
CleanSump
Site Donor 2022
Except that his prior UOAs showed less ZDDP and a trend of less metal.
I’m not agreeing with him, but UOA is not necessarily representative of wear. I just came across a Blackstone UOA of a yellow metal glitter-filled oil from rod bearings on another forum and the UOA showed nothing elevated. UOA is for oil.Except that his prior UOAs showed less ZDDP and a trend of less metal.
Here's another short UOA on this engine on the M1, prior to this was a very short run of valvoline, so the excess from the original high fe interval should be washed out. Something is definitely wearing out here, Plan is to do one more UOA, this time on valvoline, then tear into it. This sample has MOS2 in it as well.
Attachments
Is this the 0w40 FS?
It looks like some type of component wear. Viscosity is now a 30 grade.
Correct, 0w40 FS, SP.
My thought exactly. It has cold lifter tick , but it always has made a little tick until it warmed up, back even when iron was 11 ppm. Otherwise it really doensn't sound/run different. Oil pressure is exactly the same as when it was new.
I do have a new transmission w/ an edge 3000 stall converter ready to go, so honestly debating on just getting a reman engine and doing both at the same time.
Current fill in the crankcase is valvoline extended protection high mileage 0w20. If the iron drops on the valvoline, i'd be shocked, i dont think there is any way an oil alone would cause this steep of a increase of wear. The "tick" when cold is quieter on the 0w20 vs 40... but again, i wouldnt think this noise is anything concerning, it sounds like every other hemi ive heard cold, and the same as it did 100k miles ago.
I switched back to the 20wt because it pulled the P1521 "incorrect oil type code" and figured i'd try the thinner oil again for the hell of it since the best UOAs it has gotten was on 20wt.
We'll see. 700 miles on the current fill. Probably will have another UOA by the end of april.
OVERKILL
$100 Site Donor 2021
Did you cut the filter this time to check for metal?