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Author Topic: diff query  (Read 1647 times)

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supersparks

  • Guest
diff query
« on: April 27, 2011, 07:27:06 PM »
hi all i own a 2002 WJ 4.0 6cyl how can i tell which diffs i have without opening them up. i am looking at doing an oil change and i dont know if i need 80w90 or 75w140 and if i still need a friction modifier with the 75w140 as some of the oils available already have modifiers mixed in. also the manual quotes a mopar number for the transfer oil does any body know of an aftermarket alternative. thanks, mick.
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scrw

  • Guest
Re: diff query
« Reply #1 on: April 27, 2011, 07:46:10 PM »
75w90, 4litres didn't get quadradrive in the UK. Get the mopar oil, it is only around £8 a litre. I did find an equivalent oil, its a mobile agricultural hydrolic mix, but you can only get it in 200 litre drums
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Mike Pavelin

  • Guest
Re: diff query
« Reply #2 on: April 27, 2011, 08:45:29 PM »
Unless it says 'Quadradrive' on the gearshift console, it has open diffs. We used to use Shell Agrifluid in the 247 transfer case.
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supersparks

  • Guest
Re: diff query
« Reply #3 on: April 27, 2011, 09:04:11 PM »
hi, it says quadra-trac 2 on the console . does this mean i have 2 slip diffs (vari lock).
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Mike Pavelin

  • Guest
Re: diff query
« Reply #4 on: April 27, 2011, 09:11:23 PM »
No it means you have open diffs
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supersparks

  • Guest
Re: diff query
« Reply #5 on: April 27, 2011, 09:47:19 PM »
well that is the diff mystery well and truly put to bed.  ps how do i tell what gbox i have fitted would it be the 42re. thanks, mick.
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Mike Pavelin

  • Guest
Re: diff query
« Reply #6 on: April 28, 2011, 07:17:00 AM »
Yes.
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