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Old 01-18-2013, 05:15 AM
smyles smyles is online now
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Location: DC
Join Date: Dec 2011
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Mein Auto: X5
ATF replacement involves changing the transmission filter and altogether, if done right, is $$$, probably 500 or more. One thing to keep in mind, there's no established correlation b/w fluid change and gearbox longevity: live examples of 250+ K miles on original fluid coexist with broken ones where fluid was changed some way - and no one can say for sure (but obviously can speculate) whether it broke due to or despite the change. Also, often the issues are related to mechatronic parts (not fluid related), and you end up dropping the pan and changing some of the fluid anyway.

Last edited by smyles; 01-18-2013 at 05:17 AM.
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