Quote:
Originally Posted by Gazdok
Other manufacturers use exactly the same AWD system - Haldex - on their cars and recommend oil changes. I do not know why Volvo do not. I had a problem with my AOD clutch (AWD Haldex) and replaced the oil when I put a new AWD clutch in. At 40000 M it was not nice and light brown anymore. I do not want to say it would not have done another 100000M but there was some debris in there.
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That's the Haldex unit you're talking about, Clan and I are on about the bevel gear attached to the gearbox... there's actually no drain plug on it, likewise there's no drain on the rear diff.
Don't know about the Haldex, there's not many recorded failing AFAIK.