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Old 09-04-2012, 13:15   #1
evocraig
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rear diff help

Just realised a leak under the rear of the car,had a look under and looks like its coming from rear diff.the car was off road for about 5 weeks,i just got it back on road for april and i have not put my foot down for a long time before or after i got the car back on the road.i have took pics and put an arrow where i saw a drip.any ideas?

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Old 09-04-2012, 14:36   #2
majida
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Clean it up mate and throw a LOT of baby powder on it, drive around a day or 2 max and youll see exactly were its coming from
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Old 09-04-2012, 15:32   #3
craigybaby37
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Had something similar on my 5 it was knowntised on my last MOT, cleaned it all up and went for a drive and traced back the leak to the near side driveshaft seal
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Old 09-04-2012, 16:24   #4
benny1904
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I had the same on my V:
After a blast (let's say 140mph on highway) I had a big blue smoke behind the car.

I stopped and checked underneath: the AYC oil escaped thru the metal cover where your arrow is pointing at.

What I did:
Tightened the 4 bolts of that metal cover
Than I just refreshed the diff oils (AYC + diff oil) and cleaned everything.

=> never had any leaks anymore, even not after driving Nurburgring.

My theorie:
I think when the oil is old/dirty the viscosity gets higher and it heats up more. Due to the heat you build up a lot of pressure and than it needs to go somewhere. So it escaped thru that metal cover.

But if it's just leaking there I would drain the diff, remove that plate and reseal it again. Than tighten it again and check each day.
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Old 10-04-2012, 23:36   #5
evocraig
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cheers everyone ill try all advise
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