WHat is the Oil capacity for front/rear differentials? - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 37 (permalink) Old 06-30-2007, 09:39 AM Thread Starter
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WHat is the Oil capacity for front/rear differentials?

it's getting close to the time to change diff fluid, and I will be doing it myself. I was wondering if anyone knows the approx. fluid capacity front/ rear so I don't run short in the middle of the job. BTW - Quadra drive II

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post #2 of 37 (permalink) Old 06-30-2007, 03:25 PM
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Re: Oil capacity for front/rear diffs?

I dont remember without specifically looking it up but I am sure you will need to buy 4 qts (2 each). You'll likely have some leftover, but not enough to only buy 3. Dont forget the 4oz of Mopar fluid (forgot what its called) to add to each diff as you have limited slips in each differential. Also, I personally just use 75x140wt synthetic. john
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post #3 of 37 (permalink) Old 06-30-2007, 03:35 PM Thread Starter
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Re: Oil capacity for front/rear diffs?

Thanks John, that info really helps .... Is the additive only by Mopar, or is there another brand? I am going to use royal purple in the front/rear diffs.

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post #4 of 37 (permalink) Old 06-30-2007, 06:28 PM
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Re: Oil capacity for front/rear diffs?

Quote:
Originally Posted by HEMI
Thanks John, that info really helps .... Is the additive only by Mopar, or is there another brand? I am going to use royal purple in the front/rear diffs.
Royal Purple Max-Gear High performance 75W-140 does not need additive and you can check it out on their website. I have had 3k miles aleady.

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post #5 of 37 (permalink) Old 07-01-2007, 04:29 AM
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Re: Oil capacity for front/rear diffs?

Yes, there are other brands, for instance AMSOIL makes their own. However, its such a minor thing probably simpler to just buy it from the dealer. Yes, its true most if not all Synthetics advertise its not necessary. Example AMSOIL as well as the post above. I dont use it in my wifes Grand which has a limited slip in the rear. Havent yet changed the fluid in my Commander so havent made up my mind. I dont see how it could hurt to use it though just to be sure, especially while its under warranty. john
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post #6 of 37 (permalink) Old 10-21-2007, 02:47 PM
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Differential Capacity?

I'm a little past due for my differential service (20,000 miles on ODO) and wondered what the fluid capacity for them happens to be. Does anyone know? It's not listed in the owners manual, though it does specify what kind to use. I picked up six quarts of the Mobil synthetic 75w140 (GL5) as specified, but am not sure if that's enough or too much. The dealer is doing the service tomorrow as part of the oil change service contract they threw in for "free" when I bought the Commander. Any help is greatly appreciated.

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post #7 of 37 (permalink) Old 10-21-2007, 02:51 PM
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I cant say as to Commander as havent changed the differential fluid yet, but in my TJ which has a D30 front and D44 rear differential each take under 2 qts. these I believe are comparable to Commander axles so I would say 4 qts total should be enough. If you have limited slip differentials then also that 4 oz of additive must be put in to stop chattering. john
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post #8 of 37 (permalink) Old 10-21-2007, 03:27 PM
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QTII doesn't have the front and rear LSD, QDII does. I always get a little judder when turning fairly tightly on dry pavement, though.

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post #9 of 37 (permalink) Old 10-22-2007, 08:16 AM
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When I picked up the fluids at the dealer they gave me 4qts of oil and 2 4oz bottles of the additive. This was for both axels.
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post #10 of 37 (permalink) Old 10-22-2007, 08:22 AM
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My commander has 25,000 on it. I bought it used with 21,000. I'm now wondering if that service was done..... I think it was a chrysler executive vehicle. I do get the 'judder' too when turning real sharp on dry pavement.
Creek- What did the fluids cost you?

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