BMW 325i 07 automatic: flush or replace oik

thomth · 08-05-2024, 05:17 PM

My BMW 325i E91 at 150.000miles / 235.000km still has the original automatic transmission oil. It leaks at the automatic pan gasket and sometimes I feel a little bump when shifting or place it in R. Nothing too serious, drives fine

I wanted to flush the transmission and replace the oilpan but I’m in doubt. Maybe I could just replace oil and pan? To prevent new complaints after flushing? I heard that’s possible when you flush the automatic at high mileage?

cosmosschwarz · 08-08-2024, 02:08 PM

I'd replace fluid and filter, along with mechatronic sleeves and seals (there are 3 or 4 sleeves, and a seal block that need to be replaced). Also the harness connector sleeve on the outside of the trans that is known to leak on all the ZF mechatronics.

08-05-2024, 05:17 PM	#1
thomth New Member 2 Rep 17 Posts Drives: BMW E92 325i Join Date: Feb 2019 Location: The Netherlands iTrader: (0)	BMW 325i 07 automatic: flush or replace oik My BMW 325i E91 at 150.000miles / 235.000km still has the original automatic transmission oil. It leaks at the automatic pan gasket and sometimes I feel a little bump when shifting or place it in R. Nothing too serious, drives fine I wanted to flush the transmission and replace the oilpan but I’m in doubt. Maybe I could just replace oil and pan? To prevent new complaints after flushing? I heard that’s possible when you flush the automatic at high mileage?
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08-08-2024, 02:08 PM	#2
cosmosschwarz New Member 8 Rep 27 Posts Drives: E91 325xi Join Date: Aug 2023 Location: Delaware iTrader: (0)	I'd replace fluid and filter, along with mechatronic sleeves and seals (there are 3 or 4 sleeves, and a seal block that need to be replaced). Also the harness connector sleeve on the outside of the trans that is known to leak on all the ZF mechatronics.
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