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change rear diff oil

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Old Feb 12, 2008 | 09:01 PM
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Default change rear diff oil

how would this be done im sure somebody has a good way of explaining the best way
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Old Feb 15, 2008 | 11:41 AM
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I'm just about to do this too, along with gearbox oil change - any help appreciated for cmed and myself, people!
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Old Feb 15, 2008 | 12:33 PM
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Just did my MY95 yesterday, gearbox drainplug at the bottom front of gearbox (21mm)then fill up through the dipstick tube under the bonnet, Used a short piece of hose on a funnel its a slow job pouring in about 10-15mins for the
4ltrs, Rear diff has two plugs, Bottom one is drain top one is filler, Use 1/2 ratchet to undo, Drain out then replace bottom plug and fill till it comes out of the top hole (1ltr) and then refit top plug, Job done
Dave
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Old Feb 15, 2008 | 01:09 PM
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simple job. Makes me wonder why i've being paying subaru 70 quid an hour to pay a fitter £10 an hour to work on my car (i'm not bitter) LOL.
Sorry subaru UK, but i've just had enough of you using my wallet as a cashpoint!
Thanks for the response - I'll be on it tomorow - point of interest - which oil did you use? I'm going to use castrol syntrax for the gearbox, so for the rear diff...?
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Old Feb 15, 2008 | 03:49 PM
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Got the oils throu Opie oils you will find him on here, Silkolene Silktran Syn 5 70-90w x 5ltrs, (4 gearbox 1 diff), Silkolene XTR 10W-40 High performance semi-synthetic x 6ltr and filter for the engine £74 inc P+P next day delivery.
Dave
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Old Feb 19, 2008 | 09:08 AM
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Hey there should be a sticker on the back of the diff and if it is a LSD make sure you use LSD oil. on the sticker it'l either say LSD or not if your sticker has worn off there is other ways of telling
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Old Feb 19, 2008 | 10:06 AM
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dont get any grit in there, be very clean when removine the plugs, wipe clean before removing them,
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Old Feb 19, 2008 | 07:12 PM
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what about torqing the gearbox plug back upto 44nm is this over the top has anyone done this with a rachet as tight as they can as i dont have a torque bar thanks
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Old Feb 21, 2008 | 02:05 PM
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Top tip regarding the rear diff - crack the fill plug 1st. You don't want to drain all the oil then find out you can't get the fill plug undone!
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Old Feb 23, 2008 | 08:08 PM
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thanks seems a good tip nut what about the torqing of the gearbox drain plug is it important or will tight as you can do it ?
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Old Feb 23, 2008 | 11:22 PM
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i just do mine by feel, tight but not that tight the threads are gona strip.

very good tip as jay said, crack the filling plug 1st using the 1/2" rachet and maybe give it a tap with the hammer if its really tight, then same on the drain plug.

i used a syringe to refill it. simply sucking the oil out the tin and then squirting into the diff.
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Old Feb 23, 2008 | 11:26 PM
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Old Feb 23, 2008 | 11:47 PM
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Originally Posted by Jay m A
Top tip regarding the rear diff - crack the fill plug 1st. You don't want to drain all the oil then find out you can't get the fill plug undone!
bloody good point
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