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Old 06-02-2018, 02:37 AM   #21
Flagster
 
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Default Re: Front Differential Fluid Change

I changed my front and rear last month with amsoil and the front is noticeably quieter...
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Old 03-18-2019, 05:13 PM   #22
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Default Re: Front Differential Fluid Change

I did some tests, with 75w90 synthetic oil and molybdenum disulfide grease I was not successful. with mineral oil motul 85w140 the noise is much lowered both hot and cold. greetings from Italy
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Old 03-30-2019, 01:01 AM   #23
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Default Re: Front Differential Fluid Change

I changed the gear lube in both differentials today (2018) and was disappointed to find the rear drain plug is not magnetic.
I will be replacing that as soon as I locate a magnetic one.
On the other hand......Both the drain and fill are magnetic on the front. Talk about two distinct engineering philosophies.....
I was also disappointed when I drained approximately 400 mls from the front, and put in between 600 and 700.
There was very little crap on the magnet, so I don’t suspect any damage. I am glad I did it at 13k miles rather than waiting until the proscribed 100k.

Last edited by 4wheeldog; 03-30-2019 at 01:05 AM.
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Old 04-03-2019, 03:30 AM   #24
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Default Re: Front Differential Fluid Change

Does anyone know the thread and pitch of the front diff and transfer case? From memory, the rear diff just had a rubber plug you can pull out by hand.

Any help would be appreciated.
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Old 05-02-2019, 02:49 AM   #25
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Default Re: Front Differential Fluid Change

I drained and refilled my front and rear diff recently and wanted to share what I found.

With only 4300 miles on the van, I found the front differential drain plug to be completely gunked up with metal shavings.

Here is a link to the video I took.

https://photos.app.goo.gl/t4ZcdUUnmnGREtot5

The front diff drain and fill plugs both have magnets on them. The rear diff does not. Instead it has a rubber fill plug that you pop off with your fingers and a 14mm hex socket with a drain plug that has no magnet attached.

I was going to empty the transfer case too but after slowly letting the drain plug out I saw a little fluid leak out and noticed it was not gear oil but transmission oil. Apparently it needs ATF 134 which Shell sells and I bought on Amazon.
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Old 05-02-2019, 12:15 PM   #26
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Default Re: Front Differential Fluid Change

The plugs look totally normal to me.
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Old 05-02-2019, 03:58 PM   #27
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Default Re: Front Differential Fluid Change

That plug last looks just like mine did when I changed the fluid at 13k.
It probably looked like that at 1k. That is normal break in stuff for any differential.
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Old 05-29-2019, 03:24 PM   #28
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Default Re: Front Differential Fluid Change

After trying unsuccessfully to locate a part number for a stock MB magnetic differential drain plug, I bought a Dimple.
It has by far the strongest magnet of any drain plug I have experience with. So much so I had difficulty centering the plug in the hole.
I doubt the magnet being overly strong makes much difference in how much crud it will pick up.
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