Diff Oil Change - Page 2 - Dodge Cummins Diesel Forum
2013-2018 General Discussion General Chit Chat About the 2013 model year differences 6.7L 4th generation Cummins - NO ADVERTISING - Sponsored by: StarLite Diesel

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post #13 of 42 (permalink) Old 10-21-2019, 09:57 PM
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Originally Posted by 5.7 Hemi View Post
Just asking.....if your not towing heavy or the rear diff isnít going into water, why not wait till 100k to change it?
Why not? Because all the crap from break-in will still be in there.
But if you make an early change, at say 1,000 to 1,500 miles, then a long time until the next one can be feasible.


Maybe if we start telling people that the brain is an app, they will start using it?

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post #14 of 42 (permalink) Old 10-21-2019, 10:16 PM Thread Starter
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Originally Posted by Ltngdrvr View Post
I've never found any appreciable crap in mine when changing the oil, and have started to change mine without fully removing the cover.
So I see a comment like this....then why not just pump the oil out every 30K and leave the bolts and gasket alone?

Whatís everyoneís take? Also anyone know where I can find the front breather tube?

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post #15 of 42 (permalink) Old 10-21-2019, 10:19 PM
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I get it, after break in. Then do it at 100k.
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post #16 of 42 (permalink) Old 10-21-2019, 10:20 PM
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@ Tibone
^ Nothing, IMO. Personal preference. There are many axles that you can't take apart reasonably to inspect the gears anyway.
It would be a good excuse to get a cordless impact driver to take the cover off though!

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post #17 of 42 (permalink) Old 10-21-2019, 10:21 PM
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To me it is just so easy to remove the cover, that is what I do!! plus I may be just a little OCD so.....
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post #18 of 42 (permalink) Old 10-21-2019, 10:40 PM
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Quote:
Originally Posted by TiBoneFramer View Post
So I see a comment like this....then why not just pump the oil out every 30K and leave the bolts and gasket alone?

Whatís everyoneís take? Also anyone know where I can find the front breather tube?
First off, I don't have a pump, don't plan to buy one just to change diff oil when taking a few bolts loose gets the job done.

Plus, you get more of the old oil out by taking the cover off/loose.

But, it's your truck, you maintain it as you wish, by whatever procedure works for you.
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post #19 of 42 (permalink) Old 10-21-2019, 11:04 PM Thread Starter
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Originally Posted by Ltngdrvr View Post
But, it's your truck, you maintain it as you wish, by whatever procedure works for you.
Sincerely I donít know what to do here. Iím torn. Part of me says take the cover off, part of me says donít mess with the gasket and bolts.....really looking for opinions here

Also my truck has 21K miles on it, ca I wait till 30K to change the oil or best to change it now since itís the same oil the gears broke in on?

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post #20 of 42 (permalink) Old 10-21-2019, 11:51 PM
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Change it. And when your done you won’t need to do it again for quite some time.
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post #21 of 42 (permalink) Old 10-21-2019, 11:52 PM
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I'm on the original gear oil and my truck has 54k on it. I will probably change it at 60k when my next oil/fuel filter change is due.

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post #22 of 42 (permalink) Old 10-22-2019, 12:13 AM
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Quote:
Originally Posted by TiBoneFramer View Post
Sincerely I donít know what to do here. Iím torn. Part of me says take the cover off, part of me says donít mess with the gasket and bolts.....really looking for opinions here

Also my truck has 21K miles on it, ca I wait till 30K to change the oil or best to change it now since itís the same oil the gears broke in on?
It's painfully easy to pull the cover, and doing so has a few meaningful advantages, so why not?

Getting the original fill out as soon as the gears are mostly broken in is a very good thing. So why wouldn't you change it now?

Many seem to fear performing what is the cheapest and simplest maintenance task on the whole vehicle (Well, fluid related. Air filters are even quicker and easier). I can't understand why.
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Maybe if we start telling people that the brain is an app, they will start using it?

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post #23 of 42 (permalink) Old 10-22-2019, 12:15 AM
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Quote:
Originally Posted by TiBoneFramer View Post
Sincerely I donít know what to do here. Iím torn. Part of me says take the cover off, part of me says donít mess with the gasket and bolts.....really looking for opinions here

Also my truck has 21K miles on it, ca I wait till 30K to change the oil or best to change it now since itís the same oil the gears broke in on?
I didn't change mine the first time until 60K, at 487K now with ZERO gear issues. Have only replaces wheel seals, and added friction modifier to deal with the noise/tightness/grinding during hot tight turning moves.

There is absolutely NO ISSUE with taking the cover off for service, the gasket is totally reusable, same one has been on my truck since that first change when I installed my finned aluminum cover, since it came with a new gasket. The gasket is a steel core, rubber outer gasket, it's tough and seals very well, even after many times removing the cover.

@TiBoneFramer, you are WAAAAAYYYYY overthinking all of this and worrying WAAAAAYYYYY too much about it.
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post #24 of 42 (permalink) Old 10-22-2019, 07:38 AM
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Quote:
Originally Posted by SRich12 View Post
To me it is just so easy to remove the cover, that is what I do!! plus I may be just a little OCD so.....
I would agree, sounds like you are only slightly OCD. Because if you were full-on, it would be CDO, in proper alphabetical order like it should be!

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