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4X4 Differential fluid change

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Old Feb 8, 2008 | 02:37 PM
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Default 4X4 Differential fluid change

Im planning on doing an oil change and changing the diff fluid tomorrow. I have a 2007 1500 hemi 4x4 and was wondering what fluid i needed for the front and rear diff's, and also the quantity of each, thanks in advance.
 
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Old Feb 8, 2008 | 02:39 PM
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Default RE: 4X4 Differential fluid change

its in your manual. and there is a diy at the top.

It depends on if you have a limited slip or not.
 
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Old Feb 8, 2008 | 02:47 PM
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I dont have a manual, and the DIY does not mention the quantity for the rear dif, just thats its 75w-140, and it doesnt mention anything about the front dif.
 
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Old Feb 8, 2008 | 03:18 PM
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Default RE: 4X4 Differential fluid change

75-90 for the front diff
 
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Old Feb 8, 2008 | 03:35 PM
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Default RE: 4X4 Differential fluid change

yeah 75-90 for the front. if you have the limited slip use the 75 140 with friction additive. Just fill it up still it starts to come out the hole where the plug is, then put the plug in.
 
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Old Feb 8, 2008 | 03:35 PM
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Default RE: 4X4 Differential fluid change

Ok thanks, so 75-140 for the rear, and 75-90 for the front, what about quantities? Im also going to be changing the oil, im right at 15,000 miles, what else should i do?
 
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Old Feb 8, 2008 | 03:37 PM
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Default RE: 4X4 Differential fluid change

ORIGINAL: JD1500

yeah 75-90 for the front. if you have the limited slip use the 75 140 with friction additive. Just fill it up still it starts to come out the hole where the plug is, then put the plug in.
Ok, i posted my last post at the same time you posted this, ha. But how many quarts of each should I purchase?
 
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Old Feb 8, 2008 | 03:51 PM
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they usually come in taller bottles, not sure how much is in each. but i think you need 2 for each. ( i think they only come in one size) You might get away with 3 total though.
 
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Old Feb 8, 2008 | 06:25 PM
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Default RE: 4X4 Differential fluid change

DO NOT fill it to the hole. That is too much and will cause it to bubble and turn to mush. That was the old rule and does not apply to these diffs.

Fill it until its around 1/2 - 3/4" from the hole.

Front is around 3.5pts 75 by 90, rear is around 4.9pts 75 by 140, both synthetic. Lke said, use a little bottle of Mopar friction additive to the rear if you have anti slip.
 
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Old Feb 8, 2008 | 10:08 PM
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Default RE: 4X4 Differential fluid change

ORIGINAL: kenihemi

DO NOT fill it to the hole. That is too much and will cause it to bubble and turn to mush. That was the old rule and does not apply to these diffs.

Fill it until its around 1/2 - 3/4" from the hole.

Front is around 3.5pts 75 by 90, rear is around 4.9pts 75 by 140, both synthetic. Lke said, use a little bottle of Mopar friction additive to the rear if you have anti slip.
Thanks for the reply, I bought 3 of the tall bottles of each, should that be enough?
 
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