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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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  #1  
Old 02-20-2013, 10:28 AM
jcard412 jcard412 is offline
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Location: Pittsburgh
 
Join Date: Oct 2012
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Mein Auto: BMW Z3
Manual transmission fluid change

Have a 2000 Z3, 2.3, 5 speed, 31000 miles
(I'm changing out all fluids)
Yellow label on transmission says MTF-LT1
Bently manual calls for MTF-LT1
However BMW dealer said not to change unless you are doing a repair
Already bought the tranny fluid($27 /quart)
Any harm in going ahead with the fluid change?
Thanks
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  #2  
Old 02-20-2013, 11:37 AM
Wertles Wertles is offline
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Location: Rochester, NY
 
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Mein Auto: 1999 M Coupe
None whatsoever. The only downside may be smoother shifting. Make sure you remove the fill port first. You don't want to drain it first only to find out you can't remove the fill plug.
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  #3  
Old 02-20-2013, 11:48 AM
jcard412 jcard412 is offline
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OK
Thanks
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  #4  
Old 02-21-2013, 01:49 AM
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Pinecone Pinecone is offline
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Mein Auto: M Roadster/M3
I always wonder which lifetime they are talking about with "lifetime" fills.

I change mine every 50K miles.
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  #5  
Old 02-21-2013, 06:29 AM
ALM168 ALM168 is offline
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Mein Auto: Z3, e46, Ford Explorer
BMW calls it "lifetime" to reduce their costs during the free maintenance period.
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Old 03-03-2013, 02:57 PM
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Pinecone Pinecone is offline
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Except it would not be covered under the free maintenance anyway, as the interval would be past the free period.

A lot of Euro cars have "lifetime" tranny fluids. Some don't even have fill ports.
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  #7  
Old 03-03-2013, 03:10 PM
Dale K Dale K is offline
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Mein Auto: '00 M Coupe
Another motivation for a manufacturer to go "lifetime" on fluids is the various car ownership cost websites. They include scheduled maintenance in the total ownership cost for the vehicle, and people doing comparisons between cars, not knowing any better, will pick the lower-cost car. So, eliminating changes for brake fluid, trans fluid, stretching out engine oil changes, etc. makes the cost of owning the car lower, according to people who do these calculations. Of course, the real long-term cost will actually be higher, due to damage caused by not changing fluids.
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Old 03-03-2013, 03:33 PM
ALM168 ALM168 is offline
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Great point. We sometimes forget the 'hidden' reasons.
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