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#4487750 - 08/13/17 07:40 PM What tests recommended for BMW M3 6MT / LSD fluid?
bimmerdriver Offline


Registered: 09/07/10
Posts: 104
Loc: British Columbia, Canada
Going to send samples to Blackstone of BMW MTF-LT-2 and Liquimoly FULLY SYNTHETIC HYPOID GEAR OIL (GL5) LS SAE 75W-140 (4420) fluid from my 2002 M3.

Are the standard tests sufficient or should I be getting any additional tests?

Thanks.
_________________________
2002 BMW M3 (mine)
1997 BMW 328is (sold)
2002 MB ML320 (hers)
2004 VW GTI (son)

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#4487887 - 08/13/17 09:30 PM Re: What tests recommended for BMW M3 6MT / LSD fluid? [Re: bimmerdriver]
danielLD Offline


Registered: 08/12/17
Posts: 226
Loc: Chicago
Blackstone is very expensive and doesn't provide solutions or understanding. Go to another lab where you will find what you're looking for.

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#4487891 - 08/13/17 09:33 PM Re: What tests recommended for BMW M3 6MT / LSD fluid? [Re: bimmerdriver]
Seventh Offline


Registered: 11/11/12
Posts: 234
Loc: NorCal
And what are you hoping to learn from the gear oil uoa? That will help determine what, if any, additional tests need performing depending on the lab you send samples to.

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#4487999 - 08/14/17 12:37 AM Re: What tests recommended for BMW M3 6MT / LSD fluid? [Re: bimmerdriver]
danielLD Offline


Registered: 08/12/17
Posts: 226
Loc: Chicago
Very tough to do UOA on diffs. Must know a lot of proprietary metallurgy few will ever know.

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#4488373 - 08/14/17 12:51 PM Re: What tests recommended for BMW M3 6MT / LSD fluid? [Re: Seventh]
bimmerdriver Offline


Registered: 09/07/10
Posts: 104
Loc: British Columbia, Canada
Had the carrier bearings replaced in the diff and want to make sure there is no abnormal wear in the diff or the trans.
_________________________
2002 BMW M3 (mine)
1997 BMW 328is (sold)
2002 MB ML320 (hers)
2004 VW GTI (son)

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#4491540 - 08/18/17 01:17 AM Re: What tests recommended for BMW M3 6MT / LSD fluid? [Re: bimmerdriver]
danielLD Offline


Registered: 08/12/17
Posts: 226
Loc: Chicago
You won't know the metallurgy, it'll be practically useless other than seeing some wear values you won't understand nor will they. Gears and diffs are the toughest UOA to do. You need proprietary metallurgy information.

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