Powertrain Maintenance on All Wheel Drive LaCrosse

tomtella

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Location
Wolcott, CT
Buick Ownership
2010 LaCrosse CXL AWD
I have a 2010 LaCrosse CXL with 109,000 miles. I am hoping to take this car deep in mileage in the next few years. Has anybody had any high mileage issues with the transfer case, differential, or differential clutch?
Anybody know what fluids to use in these?
Is there a factory recommendation as to fluid changing? I'm not having any problems or leaks at all, just worrying about the future.
I have the official factory service manual set but it doesn't address these issues. My local dealer wasn't too sure on these either.
Finally, how can I tell if my differential has limited slip? I gather from the service manual that some do and some don't.
 
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