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Cummins Updates for all 6.7 series engines

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Sevey

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Good evening, all,
Some things that should be looked at and considered if you're the "proud" owner of one of these engines.
As a servicing dealer, Cummins has upgraded the oil requirements for the engine to insist that Valvoline Super Blue 8600 series 10W-30 SYN Blend or preferably Full synthetic oil be used. They have stated not to use 15w-40 anything in the 6.7 engines to prevent valve train issues. If you're going to be where the mean temperature is 0 and below, they want us to use 5W-30 of the same.
On another note, for those that are in warranty and those that are not, if you have the stock air intake heater, check the connector to the element on a regular basis. If it wiggles, stop driving it. The heater element is held in there by two poor quality bolts that corrode and can drop into the intake. Generally winding up in cylinder #6; bad news.
Once out of warranty we are installing the EPA approved appropriate Banks Elbow Kit "Monster-Ram Intake System" for example: Black, Key feature: 72.7 lb./min Mass Air Flow, +88.3% performance gain over stock fitment: For 2019-2024 Dodge Ram 2500/3500 6.7L Cummins Diesel. These have the heating element in the shell of the elbow and remove the flow restriction in the plenum caused by the OEM units and the failure potential problem.
 
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So you seem to have 2 different things here that are both not 100% correct….. there is only one nut in the grid heater that can fail but there are far cheaper options than banks and they are better as the heater banks uses is a joke.


The oil for the cold is 5w40 not 5w30 but there is nothing that says it has to be Valvoline.
 
H3LZSN1P3R said:
So you seem to have 2 different things here that are both not 100% correct….. there is only one nut in the grid heater that can fail but there are far cheaper options than banks and they are better as the heater banks uses is a joke.


The oil for the cold is 5w40 not 5w30 but there is nothing that says it has to be Valvoline.
Click to expand...
I was assuming (and hoping) the 5w-30 comment was merely a typo but I guess maybe we’ll find out?
 
Sevey said:
Good evening, all,
Some things that should be looked at and considered if you're the "proud" owner of one of these engines.
As a servicing dealer, Cummins has upgraded the oil requirements for the engine to insist that Valvoline Super Blue 8600 series 10W-30 SYN Blend or preferably Full synthetic oil be used. They have stated not to use 15w-40 anything in the 6.7 engines to prevent valve train issues. If you're going to be where the mean temperature is 0 and below, they want us to use 5W-30 of the same.
On another note, for those that are in warranty and those that are not, if you have the stock air intake heater, check the connector to the element on a regular basis. If it wiggles, stop driving it. The heater element is held in there by two poor quality bolts that corrode and can drop into the intake. Generally winding up in cylinder #6; bad news.
Once out of warranty we are installing the EPA approved appropriate Banks Elbow Kit "Monster-Ram Intake System" for example: Black, Key feature: 72.7 lb./min Mass Air Flow, +88.3% performance gain over stock fitment: For 2019-2024 Dodge Ram 2500/3500 6.7L Cummins Diesel. These have the heating element in the shell of the elbow and remove the flow restriction in the plenum caused by the OEM units and the failure potential problem.
Click to expand...
OOPS, yes typo should have been 5w-40. Sorry.
While there are a number of oils out there, Cummins has instructed us that they want the 8600 series Valvoline. Next time I'm at the plant or the rep is here, I'll get more clarification for you all as I've used Shell for years with no problems so, the requirement is new to us as well and we see many of these in road service and marine all the time.
I've had RAM diesels for years and other than a few quirks here and there no issues except the heater in my 22 3500 and one boat with the same issue.
Didn't want to offend anyone, just like the forum and try to provide useful info.
Sevey
 
Sevey said:
OOPS, yes typo should have been 5w-40. Sorry.
While there are a number of oils out there, Cummins has instructed us that they want the 8600 series Valvoline. Next time I'm at the plant or the rep is here, I'll get more clarification for you all as I've used Shell for years with no problems so, the requirement is new to us as well and we see many of these in road service and marine all the time.
I've had RAM diesels for years and other than a few quirks here and there no issues except the heater in my 22 3500 and one boat with the same issue.
Didn't want to offend anyone, just like the forum and try to provide useful info.
Sevey
Click to expand...
I’m trying to understand your position. Are you a Cummins service center or a Ram service center?
If It’s a Cummins bulletin for their Commercial line of B6.7 engines, they’re a significantly different architecture compared to the FCA 6.7 engine, hence different oil requirements.

Cummins typically does not issue service directives to Ram. Usually that’s done in-house. Granted, Cummins may hand it to Ram, who then hands it down to the dealer network. But it usually never goes from Cummins directly to Ram dealers. Can you clarify?

If there indeed was changes to the oil requirements, a document that specifically states this would help clarify a lot of questions….

My only suspicion if there were changes made to oil recommendations, it would be due to the difference of volatility, foaming, and aeration performance between the two.

Rotella T6 5w40 has a 12.8% NOACK loss
Valvoline P.B. 5w40 has a 11% NOACK loss

Not a huge difference but it’s there. Traditionally Rotella has been known to perform very poorly at aeration and foaming resistance. I have suspicions that this might be part of the issue with the valvetrain issues on our 6.7 engines but it’s difficult to quantify.
 
H3LZSN1P3R said:
So you seem to have 2 different things here that are both not 100% correct….. there is only one nut in the grid heater that can fail but there are far cheaper options than banks and they are better as the heater banks uses is a joke.


The oil for the cold is 5w40 not 5w30 but there is nothing that says it has to be Valvoline.
Click to expand...
I saw another grid heater/air intake option that I thought was a better/simpler solution than Banks, but I have been unable to find it again. Could you provide the other options you know about? They might include the one I remember seeing. Thanks.
 
Dodgeman said:
I saw another grid heater/air intake option that I thought was a better/simpler solution than Banks, but I have been unable to find it again. Could you provide the other options you know about? They might include the one I remember seeing. Thanks.
Click to expand...
Bd diesel has the best fix
GDP has a good one but its the same price as banks basically
 
Sevey said:
OOPS, yes typo should have been 5w-40. Sorry.
While there are a number of oils out there, Cummins has instructed us that they want the 8600 series Valvoline. Next time I'm at the plant or the rep is here, I'll get more clarification for you all as I've used Shell for years with no problems so, the requirement is new to us as well and we see many of these in road service and marine all the time.
I've had RAM diesels for years and other than a few quirks here and there no issues except the heater in my 22 3500 and one boat with the same issue.
Didn't want to offend anyone, just like the forum and try to provide useful info.
Sevey
Click to expand...

Welcome to the forum and thanks for the intel (I think?).

Your first post just came across very BOT-like, so the skeptics among us got triggered.
 
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