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  #11  
Old 02-15-2013, 12:20 AM
Kaiser Kaiser is offline
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Are any of you guys running different weight oils other than 5w-20 with or without MDS active without any problems?
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  #12  
Old 02-15-2013, 12:36 AM
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only the Ram 1500 has MDS & use the 5w20
the 2500 & 3500s don't have the MDS & those engines use 10w30
both are the exact same short block

you really have to understand the MDS system & how it closes off the 4 unused cylinders to really understand why the lighter weight oil is used for the MDS
it is way to technical for me
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  #13  
Old 02-17-2013, 10:34 AM
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Quote:
Originally Posted by GTyankee View Post
one time my Remote Start would not work
so i used the remote to unlock the doors & used the key to start it
when i did the SEE DEALER light came on
I was surprised because i had just had it in a couple days before for servicing

The Service Writer was also surprised to see me
They did a code check & it came through as a Drive ability issue, due to incorrect oil viscosity, turns out that a tech had used 10W-30, instead of 5W-20
Reason enough to change one's own oil
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  #14  
Old 02-18-2013, 03:49 AM
5500 5500 is offline
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Quote:
Originally Posted by Kaiser View Post
Are any of you guys running different weight oils other than 5w-20 with or without MDS active without any problems?
Been using M1 5-30 since changing out the factory fill at 6K miles.
Now at 19K miles (1 year). No check engine lights. No noticeable difference in how MDS operates, no noticeable difference in cold engine noise (don't think my truck is particularly noisy anyways).
I suspect my hot viscosity is close enough to 5-20 hot viscosity that there's not an issue.
Not making any recomendations... just answering the question!
YMMV
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  #15  
Old 06-27-2013, 10:55 PM
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Quote:
Originally Posted by TNC View Post
OK, I think most are aware of the recommendation about 5W-20 motor oil and the possible relation to MDS operation...or are they? We're seeing a lot of transmission and driveability complaints from people that seem to be related to the MDS and probably not really transmission related. I'm curious if some of those complaints might be connected to running the wrong oil viscosity. Those of us who change our own oil know what went into the motor. I don't think that many people change their own oil anymore, so I'm wondering...are they sure they're getting the 5W-20 recommended viscosity? Is the MDS system, especially at the lifters, really that sensitive to the 5W-20 oil vs. another viscosity? Could some of these alleged shifting and driveability issues that seem to be connected to the MDS actually be related to the wrong oil viscosity? Would the wrong oil cause an imbalance or some other performance related symptom at the lifters to result in a very noticeable MDS operation glitch? Just thinking out loud here, as I was preparing to change my new truck's oil for the first time...with 5W-20 of course...LOL!

Forgot to add, I really haven't had any issue with the MDS kicking in and out. Yes, I can feel it, but it's not particularly annoying or causing any grief...at least from my perspective. People are different, however, and some can't stand even the slightest perceived disruption in the power delivery. Some might call them anal and some might call it preference, but you have to admit that some may be a bit hypersensitive to some quirks in any vehicle's operation.
I have an 08 Hemi Ram and I have been running 5W20 Royal Purple. That being said, I have seen bulk Mobile 5W30 used extensively in both car and truck Hemi MDS powertrains with few incidents over the last 5 years. With the TSB in hand, I initially questioned the wisdom of doing this, but it has been cost prohibitive.
As for my own truck, I am a technician first and realize the design intent behind the thinner viscosity oil. I need this truck to last to 200K and am willing to pay for top shelf lubricants.
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  #16  
Old 09-02-2013, 04:30 PM
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I am running 5w30 royal purple, only for a little over 200 miles though (first oil change in my truck), no issues, lights or anything negative, just a better running truck.
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  #17  
Old 09-02-2013, 06:55 PM
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And with most here that shut the MDS off either by Tuner or by way of the ERS, the use of 10W30 could definitely work. I haven't used my MDS for a year now and will consider the 10W30 switch more seriously.
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  #18  
Old 10-22-2013, 09:50 PM
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I mix at least 3qts 5W30 and have use 4qts 5W30 in the summer with no problems. I just don't like straight 5W20, sorry that's me.
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  #19  
Old 10-22-2013, 10:57 PM
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Quote:
Originally Posted by GTyankee View Post
one time my Remote Start would not work
so i used the remote to unlock the doors & used the key to start it
when i did the SEE DEALER light came on
I was surprised because i had just had it in a couple days before for servicing

The Service Writer was also surprised to see me
They did a code check & it came through as a Drive ability issue, due to incorrect oil viscosity, turns out that a tech had used 10W-30, instead of 5W-20
This happens far too many times and is why i change my own oil. It sucks though for people who are not so inclined or have the ability and rely on the techs to get the job done properly.
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  #20  
Old 07-22-2014, 05:45 PM
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My owners manual clearly states if you can't find or have no access too 5W-20-->You can use 5W-30.

I myself have been a member of bobistheoilguy.com since 05 and in the time period until now. I know M1 AFE & EP 0W-20 and M1 0W-40 are some of M1 most Robust oils.

I have used M1 oils since I was 16-->I am now 49 and still use M1 in my new Ram. My first Oil Change I poured in 5Qts of M1 AFE 0W-20 & 2Qts M1 0W-40. After 500 miles I have had no issues. The 5.7L Idles and Runs Very Smooth!!!

Mind U-->I will not tell any other 2014 Ram 5.7L owner to do this. This is just my own personal experience!
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Last edited by SyN; 07-22-2014 at 05:53 PM. Reason: NonYasDamBusiness!
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