How do I tell if I have a limited slip differential? - Page 2 - JeepForum.com

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post #16 of 21 Old 11-30-2012, 08:50 AM
foggybottombob
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the only way to know what differential you have is to take off the cover and look at it. The spin test only works for certain types of differentials which are not worn out.

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post #17 of 21 Old 11-30-2012, 01:02 PM Thread Starter
who_datjeep
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Quote:
Originally Posted by foggybottombob View Post
the only way to know what differential you have is to take off the cover and look at it. The spin test only works for certain types of differentials which are not worn out.
Makes sense. What weight and how much oil do I need for Dana 35?
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post #18 of 21 Old 11-30-2012, 02:04 PM
foggybottombob
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Taken directly from the YJ FAQ (frequently asked questions):

What fluids do I use and how much do I put in my Jeep?
*Axles:
- Gear oil - 80 weight for light duty and normally cooler climates - 90w120 weight for heavy duty and normally warmer climates Note: Some rear axles are equiped with factory posi - a limited slip additive must be put in with the gear oil to extend and protect the limited slip action
Dana 30 = 2.5 pints
Dana 35 = 3.5 pints
Dana 44 = 4.0 pints


I use 75w90 as I recall.
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post #19 of 21 Old 01-22-2016, 12:14 PM
aei_vd
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Hi guys,
Isn't there any online resource in which I can check by VIN number if my ZJ has the LSD or not?
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post #20 of 21 Old 01-22-2016, 12:15 PM
aei_vd
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Hi guys,
Isn't there any online resource in which I can check by VIN number if my ZJ has the LSD or not?
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post #21 of 21 Old 01-23-2016, 09:19 PM
Tru2Chevy
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You can get a build sheet from the manufacturer that will tell you whether or not your vehicle came with a limited slip rear from the factory. Of course, that doesn't mean that it's working or even that it's still installed - you have to check that yourself. Friction modifier is cheap, and adding some, or spending a couple of extra bucks on fluid that includes it already won't have any effect on your standard open differential, if that's what you have.

- Justin

1992 Cherokee Laredo - all stock, DD. Needs some minor rust repair, then on to the mods!

1996 Cherokee Classic - 3.5" lift / 31.0x10.5 Mastercraft Courser CTs / Warn XD9000i - Stripped for parts / junked :(

2004 Grand Cherokee Laredo - 4.7, bone stock - Wife's DD

NJ F-Body Owners Association
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