Transfer Case seal, Torque and Performance Control

clivem2 · 05-05-2012, 04:59 AM

Next week my 30D goes into have the Transfer Case seal replaced as it's been leaking oil. Torque from the diesels is a lot to ask the gearbox to handle so maybe it's not too surprising these things happen. When I put the X3 into Sport+ and boot it hard round a tight bend the handling is superb for a 4x4. The 413lbs/ft of torque feels very strongly directed by the PC to the rear which pushes the car around the bend in a very satisfying manner.

Is it my enjoying myself like this that weakens the Transfer Case seal? (aside from it not being up to the job or kinked when fitted)

Nahoa · 05-05-2012, 06:31 AM

I have no specific familiarity with the systems and components, but I'd say what you described is exactly what we expect this car to be able to do routinely. It's what I'm doing with mine (and I agree, it is satisfying) and what I've done (absent the xDrive element) with my previous BMWs. Doesn't strike me as driver error.

05-05-2012, 04:59 AM	#1
clivem2 Colonel 539 Rep 2,073 Posts Drives: X3 M40i Join Date: Aug 2008 Location: UK iTrader: (0)	Transfer Case seal, Torque and Performance Control Next week my 30D goes into have the Transfer Case seal replaced as it's been leaking oil. Torque from the diesels is a lot to ask the gearbox to handle so maybe it's not too surprising these things happen. When I put the X3 into Sport+ and boot it hard round a tight bend the handling is superb for a 4x4. The 413lbs/ft of torque feels very strongly directed by the PC to the rear which pushes the car around the bend in a very satisfying manner. Is it my enjoying myself like this that weakens the Transfer Case seal? (aside from it not being up to the job or kinked when fitted) __________________ Current: G01 M40i Silver / Tartufo Previous: E30 318iS, E39 520i 523i 523i, E46 vert 330i 330i, E93 vert 335i, F25 30D 35D
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05-05-2012, 06:31 AM	#2
Nahoa Lieutenant Colonel 45 Rep 1,876 Posts Drives: F25 35i Mineral Silver/Black Join Date: May 2008 Location: Virginia iTrader: (0)	I have no specific familiarity with the systems and components, but I'd say what you described is exactly what we expect this car to be able to do routinely. It's what I'm doing with mine (and I agree, it is satisfying) and what I've done (absent the xDrive element) with my previous BMWs. Doesn't strike me as driver error. __________________
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