16 Dodge RAM 3500 w/ 6.4L Hemi - Oil spec ???

[kschachn]

Originally Posted By: smokingun45
Looks to me like Dodge is specing a 0 or 5w-20 oil for this HD truck engine. This engine uses some sort of cylinder cut off for cruise. My last 4 trucks have been Dodge/Cummins 5.9 diesel trucks, so I'm out of the loop on gas engines.


Where exactly was it you saw this?

 

[Branson304]

Use 0W or 5W-20 with no worries if that's what RAM specs for this engine. I've used the recommended 5W-20 in my Fords with plenty of towing & they still run great. I sold my 2011 6.2L gas V8 with 160,000 miles, 90% towing all with 5W-20 & still ran like a champ. My 2012 6.2L gets all 5W-20 as well & still runs great at 74,000. No strange noises or anything. 5W-30 certainly won't hurt anything but I'd stick with the recommendation, especially under warranty.

Oh, and my friend has a 2008 Ram 1500 with a 5W-20 spec'd 5.7L Hemi. Always use 5W-20 in it & it still runs like a champ at 120,000.

 

[smokingun45]

I haven't bought the truck yet, and I was told 0w-20 was the oil specd for the Hemi's by a stealership minion.

A high quality synthetic 0w-40 oil doesn't bother me at all.

 

[Justin251]

Then I'd go with what the manual says not some schmoe that thinks he knows everything.

The 5.7l is the 1500 specs 5w20 for the mds.
The 5.7l for the 2500 and 3500 spec 5w30 with no mds.
The 6.4l for the 2500 and 3500 spec 0w40.

This is going by my 2014 manual.

 

[bigt61]

Amsoil website for a 2015 Ram 3500 6.4L specs 0W-40. High load, high stress towing requires a thicker viscosity IMO. If you're towing lighter weights, I'm sure 20's may survive in a truck that specs it - like the new GMs.

 

[kschachn]

Originally Posted By: bigt61
Amsoil website for a 2015 Ram 3500 6.4L specs 0W-40. High load, high stress towing requires a thicker viscosity IMO. If you're towing lighter weights, I'm sure 20's may survive in a truck that specs it - like the new GMs.


As does the manufacturer.

The jokers here saying to use -20 are either clueless or a rock. Hopefully they are ready and willing to warranty the engine.

 

[Nate1979]

The 2016 Ram's with the 6.4 require 0w-40. Its not rocket science.

 

[Hootbro]

Originally Posted By: Nate1979
The 2016 Ram's with the 6.4 require 0w-40. Its not rocket science.


To add, it is not just any 0W-40 but one that meets the MS-12633 spec and only the MOPAR, AMSOIL and Pennzoil Platinum Ultra in that weight meets it. The main thing in that spec is a high moly in the oil.

FCA is a [censored] for warranty work and will do anything they can to deny claim. I would not in any way shape or form play around and use any oil not meeting their required weight and specification when it comes to the 6.4L engine.

Also, the 6.4 is a multi-displacement cylinder deactivated engine and is pretty picky when it comes to weight and throwing codes when the wrong weight is used let alone using the wrong specification. This is the wrong engine to be playing "Bubba Engineer" and think one knows better that what is called out in the manual.

Lastly, the correct oil is not cheap, so be prepared for that shock. I know was shocked but have come to accept that is the price of admission with this engine.

 

[Clevy]

U
Originally Posted By: Hootbro
Originally Posted By: Nate1979
The 2016 Ram's with the 6.4 require 0w-40. Its not rocket science.


To add, it is not just any 0W-40 but one that meets the MS-12633 spec and only the MOPAR, AMSOIL and Pennzoil Platinum Ultra in that weight meets it. The main thing in that spec is a high moly in the oil.

FCA is a [censored] for warranty work and will do anything they can to deny claim. I would not in any way shape or form play around and use any oil not meeting their required weight and specification when it comes to the 6.4L engine.

Also, the 6.4 is a multi-displacement cylinder deactivated engine and is pretty picky when it comes to weight and throwing codes when the wrong weight is used let alone using the wrong specification.

This is the wrong engine to be playing "Bubba Engineer" and think one knows better that what is called out in the manual.


Amsoil carries a cert or meets or exceeds. If meets or exceeds buyer be ware. We have seen boutique oils tested here that are supposed to meet or exceed and based on the data we saw they don't.
And I'd eat my shirt if m1 0w-40 or castrol 0w-40 didn't perform excellent in this application.
This exemption of m1 is pure politics and nothing more. I'm a pennzoil guy and would rather use it over m1 or castrol however I'm not stupid enough to believe they wouldn't do in an app that calls for 0w-40.
And I happily buy them when 30 dollar jugs go on sale.
Look at the oem's those oils carry approvals for and ask yourself if the SRT engines are any more exotic of high stress than they are.

 

[Clevy]

Since when do the 2500 and up trucks have mds?

 

[Hootbro]

Originally Posted By: Clevy

Amsoil carries a cert or meets or exceeds. If meets or exceeds buyer be ware. We have seen boutique oils tested here that are supposed to meet or exceed and based on the data we saw they don't.
And I'd eat my shirt if m1 0w-40 or castrol 0w-40 didn't perform excellent in this application.
This exemption of m1 is pure politics and nothing more. I'm a pennzoil guy and would rather use it over m1 or castrol however I'm not stupid enough to believe they wouldn't do in an app that calls for 0w-40.
And I happily buy them when 30 dollar jugs go on sale.
Look at the oem's those oils carry approvals for and ask yourself if the SRT engines are any more exotic of high stress than they are.


Not going to get into an argument but the facts are M1 and Castrol do not meet the MS-12633 spec and it is mainly due to the lower moly count in those oils.

People can talk themselves or use whatever oil they want, FCA is clear, 0W-40 and MS-12633 is the spec. To do otherwise is at risk of the end user and possible rejection of warranty claim. Also, M1 or Castrol will not cover it because they will fall on the MS-12633 spec and the end user selecting their oil incorrectly for the application.

 

[Hootbro]

Originally Posted By: Clevy
Since when do the 2500 and up trucks have mds?


Since 2014+ when the 6.4L was introduced. 5.7 Hemi in the 2500/3500 does not have MDS enabled but the 1500's do.

 

[OVERKILL]

The AMSOIL product is, at this point, meets or exceeds. Castrol's oil selector recommends their 0w-40 for the SRT applications (despite not being formally approved) and M1 0w-40 carries the old SRT approval, the pre-SOPUS one, which is probably identical to the new one, but they changed the number when they changed from Mobil to SOPUS.

I believe the only formally approved OTS oil for this application is the Pennzoil SRT 0w-40.

 

[Hootbro]

Originally Posted By: OVERKILL
The AMSOIL product is, at this point, meets or exceeds. Castrol's oil selector recommends their 0w-40 for the SRT applications (despite not being formally approved) and M1 0w-40 carries the old SRT approval, the pre-SOPUS one, which is probably identical to the new one, but they changed the number when they changed from Mobil to SOPUS.

I believe the only formally approved OTS oil for this application is the Pennzoil SRT 0w-40.


More to it than changing oil manufacturers than just the spec number changing.

Also, the truck 6.4L Hemi's are different than the SRT 6.4 Hemi's. The current MS-12633 is downwards compatible to the SRT 6.4's but the older spec that M1 cover with the SRT's is not upward compatible with the truck 6.4's.

 

[OVERKILL]

Originally Posted By: Hootbro

More to it than changing oil manufacturers than just the spec number changing.


You think so? It was immediately after the fallout between Mobil/Chrysler and the FIAT/SOPUS takeover that the spec number changed.

Since that time Mobil has not pursued any of the recent Chrysler approvals on their Mobil 1 product line.

Originally Posted By: Hootbro
Also, the truck 6.4L Hemi's are different than the SRT 6.4 Hemi's. The current MS-12633 is downwards compatible to the SRT 6.4's but the older spec that M1 cover with the SRT's is not upward compatible with the truck 6.4's.


They are the same engine family and displacement. The Mustang 5.0L Coyote is different from the truck 5.0L Coyote (and have different power outputs) but they also share an oil spec. This is pretty commonplace.

And of course the old spec isn't upwards compatible, that's my point. The new spec came out to displace the old spec with the OEM changeover.

There's a lot more politics to this than there is approval process.

 

[Ramblejam]

Originally Posted By: Hootbro
More to it than changing oil manufacturers than just the spec number changing.


Why don't you provide the actual MS-12633 technical documents?

Because, at this point, everything you've stated is transparently conjecture from SRT/Ram forums...

 

[Justin251]

Lol @ Chrysler spec.

 

[SteveSRT8]

Originally Posted By: OVERKILL

There's a lot more politics to this than there is approval process.


Indeed. M1 0W-40 is printed right on my filler cap.

And anyone familiar with newer gen Hemis knows they run great on any oil. MDS works, everything is fine as wine. Think about a cold start in the great white north. Think that oil is a bit thick?

They are also quite easy on oil, only the hi po tunes in the SRT's get a bit of fuel dilution. The bottom line is while under warranty it may be foolish to use an oil not approved. May never even notice either...

 

[Garak]

Originally Posted By: OVERKILL
You think so? It was immediately after the fallout between Mobil/Chrysler and the FIAT/SOPUS takeover that the spec number changed.

Too bad it wasn't Agip. That might have really spiced things up.

 

[kschachn]

Originally Posted By: Garak
Originally Posted By: OVERKILL
You think so? It was immediately after the fallout between Mobil/Chrysler and the FIAT/SOPUS takeover that the spec number changed.

Too bad it wasn't Agip. That might have really spiced things up.

Whenever I think of Agip, I think of: