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Old 11-02-2012, 01:06 PM
cvx5832 cvx5832 is offline
Officially Welcomed to the 'Fest
Location: Walnut Creek, CA
 
Join Date: Jan 2009
Posts: 532
Mein Auto: 325Ci, 325Cic, C300
It definitely warrants a closer inspection. In the same thread at E46F, you mentioned changing out the fluid at 98k, and what came out was clean and sediment free. Now, only a few thousand miles later, it's brown and frothy. Maybe ATF does that, I don't know. But the fact it's now brown when the outgoing 98k fluid was clean means it became brown on the last fill. To further eliminate other possibilities, what transmission is this and what fluid was used?

Heat exchanger is at the bottom of the radiator. You can see it from the engine bay and has a couple hoses connected to it.

http://realoem.com/bmw/showparts.do?...46&hg=17&fg=05
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