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Differential fluid

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Old Dec 7, 2011 | 01:11 PM
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From: Kyle, TX
Year: 1990
Model: Cherokee
Engine: 4.0
Question Differential fluid
Hey I just got my chrome differential covers in!! What kind/weight oil do I use??? Dana 30 & 35.

Thanks!
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Old Dec 7, 2011 | 01:18 PM
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From: Salem Nh
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75-90, if u tow alot u can run something a bit heavy. Fill them up till fluid starts coming out the plug
Last edited by jeepxj19; Dec 7, 2011 at 01:28 PM.
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Old Dec 7, 2011 | 01:22 PM
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Not likely with the D35, but if you have a limited slip diff, you'll need a fluid with a friction modifier.
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Old Dec 7, 2011 | 01:52 PM
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Originally Posted by jeepxj19
75-90, if u tow alot u can run something a bit heavy. Fill them up till fluid starts coming out the plug
x2. Get 4 liters in all. 2 for the front, 2 for the back. If you're not towing anything, you may even wanna go synthetic. Help improve that mileage a bit
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Old Dec 7, 2011 | 02:05 PM
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Ok cool. I do have 250k on my beast!!! Should i go ahead and go synthetic? It's my dd and weekend warrior!
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Old Dec 7, 2011 | 02:09 PM
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Someone will probably disagree with me but if that were my car I definitely would go synthetic
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Old Dec 7, 2011 | 03:11 PM
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Year: 1989
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x2 synthetic
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