6.4L Oil and MS-12633

Discussion in 'Heavy Duty' started by HS-LD, Jan 4, 2017.

  1. Andrew09HEMI

    Andrew09HEMI Senior Member

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    Id agree that most would be fine, but Im almost certain this MS-12633 has something to do with the oil and its state under heavy load/temp.
     
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  2. SyN

    SyN 6.7L CTD Owner

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    One thing I want to say: After viewing 2 VOA of the SRT 0W-40 as well as more then a handful of UOA it shows to be one of weakest 0W-40 oils. It's additive package is some what weak compared to RL/M1/Castrol. It only has a excess of Tri-Nuclear Moly! Which is a plus! It has shown to shear down to a 30wt really quick!

    It's nothing special! Shell really needs to spend some more time with the additive package.
    Within the Hellcat/SRT forums: Many of the owners have jumped ship and have started running M1/Castrol 0W-40. Some have began running T6 5W-40.

    For the normal 6.4L driver the SRT 0W-40 will serve/protect the motor well. If I was working that motor most of the time? I believe there are better options out there @ a lower cost!

    Looking at both VOA 7 months ago the PUP 5W-30 actually has a more robust additive package then the SRT 0W-40 . The SRT only has more Moly!

    This is only my thoughts/opinions through my own research. The SRT 0W-40 is a decent oil for your 6.4L. I just believe there are more robust oils out there.
     
    Last edited: Jan 6, 2017
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  3. RAM_Designs

    RAM_Designs Senior Member

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    I noticed this when I was running it and draining it.

    I did this before my most recent M1 fill. I had some leftover Redline 10w-40 so I did a 4/3 combo with the T6/Redline. I liked that much better than the 5/2 I did the the M1/Redline.
     
  4. HS-LD

    HS-LD Member

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    I know what your saying here is somewhat anecdotal, but I have to admit my gut feelings with a few hours of internet surfing kinda made me think along the same lines, hence why I started the thread in the first place.

    My hunch is that the Castrol 0w40 made in Belgium and a true group 4 synthetic is a better bang for the buck, and easier to obtain than the PUP. I'll let you all know if I was right 10 years from and 120,000 miles later... :)
     
  5. Hootbro

    Hootbro Senior Member

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    Trying to get educated here but what in your opinion makes PUP 0W-40 a weak additive pack?

    Also as you stated on the SRT forums, what exactly is making some go to another oil? Is there increased wear for them and if so, is there examples of this?
     
  6. RAM_Designs

    RAM_Designs Senior Member

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    I'm not sure about the details of the add pack myself, but I do remember that the oil shears down to a 30wt pretty easily, since it is already a very thin 40wt oil.

    I don't like thin oil.
     
  7. Hootbro

    Hootbro Senior Member

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    Yeah, I got three oil analysis and aware of the shearing. That does not bother me. Nothing shows elevated wear because of it for me. If anything, it reinforces to me use of a good 5W-30 is not a issue.

    Just wonder why the some of the SRT guys are moving away from it but I am sure they run their engines a bit harder especially if they track it.
     
  8. HvyDuty

    HvyDuty Senior Member

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    I've been running Castrol 0w-40 since my first oil change. Immediately noticed more quiet cold start up. Tow a 30 ft 8k travel trailer regularly. No CEL, no issues.

    Like has been said on here, my Hemi really woke up at around 10k miles.

    I get my Castrol 0w-40 from Amazon shipped to my door for about the price of any other synthetic oil. IMO it is a steal.
     
  9. SHOOT2KILL

    SHOOT2KILL Senior Member

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    Looking for opinions on mixing 0w30 with 0w40 PUP...I read in this thread that the 0w40 breaks down to a 0w30 very quickly in it's life...Or is anyone using straight 0w30 full syn, and what have been the results. Reason I ask...Found CLEARANCE PRICED 0w30 full syn @ Autozone for $2.00 a qt...I don't mind experimenting with my next oil change...5 qts 0w40...2 qts 0w30...What do you think.........
     
  10. Hootbro

    Hootbro Senior Member

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    I would say either run with a full 0W-30 or 0W-40 fill than mix. While all API rated oils are mix compatible, you might not get the best benefit if of either depending on chemistry make up between the two weights.

    Those that mix with any seriousness, do so staying with the same brand of oil between the two weights and not different brands.

    Having run 5W-30 in my 6.4L, I would have no problem running a full 0W-30 if needed.
     

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