Diff Oil Change - Page 3 - 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 #25 of 42 (permalink) Old 10-22-2019, 07:41 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 just use the 12V DC pump for my boat motor to suck out the oil and then replace. It really won't make a difference how you do it.

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post #26 of 42 (permalink) Old 10-22-2019, 10:51 AM
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and torque on those bolts is about 20 ft/lbs correct?

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post #27 of 42 (permalink) Old 10-22-2019, 11:02 AM
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Changed mine at 28k first time. About 5 years later changed again at 130k and still looked good with nothing unusual noted in fluid, pan, or gear housing. Reused the same gasket and no leaks. Did the same mileage/time service intervals on my '05. It's got over 200k and going strong. Valvoline full synthetic seems to work just fine for me.

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post #28 of 42 (permalink) Old 10-22-2019, 12:29 PM
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When installing my AAM cover I torqued the bolts to 23 Ft Lbs. Plenty tight. I believe spec is 30#.

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post #29 of 42 (permalink) Old 10-22-2019, 12:32 PM
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Originally Posted by GMconvert View Post
I just use the 12V DC pump for my boat motor to suck out the oil and then replace. It really won't make a difference how you do it.
Could you please explain how it doesn't?

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

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post #30 of 42 (permalink) Old 10-22-2019, 03:14 PM
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"@TiBoneFramer, you are WAAAAAYYYYY overthinking all of this and worrying WAAAAAYYYYY too much about it."

^This sums up the last 2 threads. Seriously, you have a big tough new pickemup truck. It's fine, no different than the last (however many) vehicles you've driven. It won't fall apart if you push it a bit and it won't last forever if you baby it.

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post #31 of 42 (permalink) Old 10-22-2019, 03:19 PM
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Quote:
Originally Posted by Ltngdrvr View Post
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.
True^.
On a similar note, I broke down and bought one of those 6 quart vacuum pumps, primarily for changing the boat oil as the newer boat was a pain in the ___ by other means. I've found that to be the best $60 spent in a while on a tool.
Used to use a drill motor pump, siphoning, turkey basters, cutting lines loose and hope to catch all the fluid, etc for years.
That pump is the shizz for vehicles and toys maintenance.
Still drain what I can, but being able to extract whatever kind of vehicle juice you need to in short order and zero mess is priceless!

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post #32 of 42 (permalink) Old 10-22-2019, 10:11 PM
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Now try that 6.5 gal oil extractor from Harbor Freight (yeah, I know).
Retails for $159 but you can get at least 10-20% off of that. Very
useful

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post #33 of 42 (permalink) Old 10-23-2019, 07:28 AM
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Originally Posted by Jimmy N. View Post
Could you please explain how it doesn't?
Changing fluid is changing fluid, now if people want to pull the cover and inspect, go ahead.

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post #34 of 42 (permalink) Old 10-23-2019, 12:10 PM
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Quote:
Originally Posted by GMconvert View Post
Changing fluid is changing fluid, now if people want to pull the cover and inspect, go ahead.
There's more to it than that. Changing the fluid is part of getting rid of the contaminants, which is the important thing.
I'm pretty sure that the same fluid could be reused (if there's no water contamination) once well filtered.

While sucking most of the fluid out is better than not doing anything, it still leaves the worst stuff at the bottom. At least I have never seen or heard of any device that doesn't.

Pulling the cover not only allows for an inspection, but to clean out all the crap that has settled at the bottom.
Then refilling with new fluid (because it's so much quicker and easier than filtering the old oil) completes the job as it's intended to be done.

Of course, lacking a proper drain pan, sucking the fluid out and then letting what remains drip into a coffee mug when removing the cover works, too. But I don't mind spending $3 on a drain pan. They're reusable, just like the cover gasket.

As an aside, I recently heard about a guy who put on rubber gloves to pull the dipstick on his car and check the oil. It naturally made me crack up, but now I realize that he may very well use suction to drain the oil pan, too. If he gets that deep into vehicle maintenance, that is.

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

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post #35 of 42 (permalink) Old 10-23-2019, 12:15 PM
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Using a suction device for fluid removal is as about half-assssssssed as it gets when one is working on a 2003 and newer RAM 2500 or 3500 with those wonderful, reusable gaskets....
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post #36 of 42 (permalink) Old 10-23-2019, 06:50 PM
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Originally Posted by gsbrockman View Post
Using a suction device for fluid removal is as about half-assssssssed as it gets when one is working on a 2003 and newer RAM 2500 or 3500 with those wonderful, reusable gaskets....
100% agree.
I'm sure none of you guys would use a suction device to do your normal oil changes because any gunk at the bottom will still be there when you're done.

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