Factory Engine Oil Fill - Dodge Cummins Diesel Forum
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post #1 of 17 (permalink) Old 08-27-2019, 01:36 AM Thread Starter
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Factory Engine Oil Fill

Those of you piloting a Cummins powered 19 Ram may or may not have wondered what the factory engine oil fill is - I did. You may also have noted that the owner’s manual is specifying a 10W-30 (meeting appropriate specs) as a recommended engine lubricant. While a 10W-30 oil grade is not unusual in the diesel world, it is a departure for FCA to be recommending it for the Cummins equipped Rams. I spent a fair bit of time trying to dig up some background on the switch and every FCA individual (dealer and FCA CS) I spoke with re the issue were ignorant of the fact that FCA had made the switch. Most insisted it was either 15W-40 or 5W-40. This much I know (or think I know): Factory fill is assuredly a Shell product and probably Rotella T4 or T5 (I suspect T5). Please chime in if you think or know otherwise.


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post #2 of 17 (permalink) Old 08-27-2019, 01:38 AM
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here it is straight outta the book.
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post #3 of 17 (permalink) Old 08-27-2019, 10:20 AM
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Originally Posted by Burn'n Oil View Post
Those of you piloting a Cummins powered 19 Ram may or may not have wondered what the factory engine oil fill is - I did. You may also have noted that the owner’s manual is specifying a 10W-30 (meeting appropriate specs) as a recommended engine lubricant. While a 10W-30 oil grade is not unusual in the diesel world, it is a departure for FCA to be recommending it for the Cummins equipped Rams. I spent a fair bit of time trying to dig up some background on the switch and every FCA individual (dealer and FCA CS) I spoke with re the issue were ignorant of the fact that FCA had made the switch. Most insisted it was either 15W-40 or 5W-40. This much I know (or think I know): Factory fill is assuredly a Shell product and probably Rotella T4 or T5 (I suspect T5). Please chime in if you think or know otherwise.
a 10-30 is very unusual in the diesel world. Never heard of it recommended for any diesel... I think or would hope that's a misprint as very few 10-30s are designed for soot and ash. Thanks for posting this. Many should verify before using a 10-30

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post #4 of 17 (permalink) Old 08-28-2019, 12:22 AM Thread Starter
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here it is straight outta the book.
Thank you. Was gonna do that but for some reason, I'm not able to upload images.

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post #5 of 17 (permalink) Old 08-28-2019, 12:27 AM Thread Starter
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a 10-30 is very unusual in the diesel world. Never heard of it recommended for any diesel... I think or would hope that's a misprint as very few 10-30s are designed for soot and ash. Thanks for posting this. Many should verify before using a 10-30
Caught me off guard too but after a little research discovered that all the major diesel oil producers (Mobil, Shell, Chevron, Valvoline) are making a 10W-30 that is CK-4 certified and meets Cummins specs.

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post #6 of 17 (permalink) Old 09-03-2019, 10:29 PM
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10w30 is not unusual in the diesel world...in the truck market yes. It is seen in off road vehicles and machinery

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post #7 of 17 (permalink) Old 09-10-2019, 10:27 AM
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Originally Posted by AirGrabber View Post
a 10-30 is very unusual in the diesel world. Never heard of it recommended for any diesel... I think or would hope that's a misprint as very few 10-30s are designed for soot and ash. Thanks for posting this. Many should verify before using a 10-30
not as of late, all the newer Detroit engines I see coming through the shop are using 10W30 engine oil for better fuel economy #'s, BUT is is specific diesel engine oil that has longer drain intervals, NOT your average gasoline engine oil

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post #8 of 17 (permalink) Old 10-12-2019, 12:01 PM
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What Volume? ?15 quarts? IDK! Stupid question for reference.

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post #9 of 17 (permalink) Old 10-12-2019, 12:41 PM
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Quote:
Originally Posted by AirGrabber View Post
a 10-30 is very unusual in the diesel world. Never heard of it recommended for any diesel... I think or would hope that's a misprint as very few 10-30s are designed for soot and ash. Thanks for posting this. Many should verify before using a 10-30
I beg to differ, Caterpillar has been 10W30 for more than a decade. We use 15W40 unless told otherwise. In fact, Caterpillar engine oil pressure testing has been using 10W30 for several decades. No specs for 15W40. But we still fill with 15W40 unless other wise told to.

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post #10 of 17 (permalink) Old 10-12-2019, 12:44 PM
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Originally Posted by AirGrabber View Post
a 10-30 is very unusual in the diesel world. Never heard of it recommended for any diesel... I think or would hope that's a misprint as very few 10-30s are designed for soot and ash. Thanks for posting this. Many should verify before using a 10-30
Where are you in South West Pa. ?

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post #11 of 17 (permalink) Old 10-13-2019, 11:41 AM
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I bought the lifetime oil change deal from my dealer, when I took it in for the first oil change I looked the service manager in the eye and said, you know that the new 2019s have a different oil spec than the previous year models right?. He smiled like I was nuts and went about his duty. 1/2 hour later he walks up to me and says " you were right about the oil, we dont have any in the shop so I sent the kid to the auto parts store". They filled with shell t-5 10w-30.I going to guess every 2019 before me got the old 15w-40 stuff.
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post #12 of 17 (permalink) Old 10-18-2019, 04:46 AM Thread Starter
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And another thing: 2019 factory fill... 10W-30. Prior yrs... 15W-40. Roger that!

The diesel supplement to the OM, even going back a number of yrs, is emphatic that neither one of the foregoing factory fills is compatible with temperatures below zero degrees F (-18C). However, a very large swath of North America endures these temperatures for four, sometimes five months of the year. So, in these bone-chilling areas, what does a dealer do when selling one of these diesel powered pickmeups? I'm quite certain that FCA does not suspend truck sales in the winter so I have to wonder if unsuspecting buyers are driving trucks off the lot with a crankcase full of oil that is incompatible with their di_k-shrivelling temperatures. Are the dealers even aware of this dilemma? I think I know the answer and I don't like it.

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