Should I change the transmission fluid and filter at 156,000 miles? 2003 bmw 530i - Bimmerfest - BMW Forums



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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 09-04-2019, 05:25 PM
iLmon3y iLmon3y is offline
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Should I change the transmission fluid and filter at 156,000 miles? 2003 bmw 530i

My torque converter went bad so I have to replace that but Iím thinking about changing my atf fluid and filter as well. My car has high mileage so Iím nervous that it might ruin the transmission more. So far, it shifts fantastically but I have no idea how often the previous owner changed his transmission fluid if he even did it at all. What do you guys think?


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  #2  
Old 09-04-2019, 05:41 PM
CSMBlack-540i CSMBlack-540i is offline
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Originally Posted by iLmon3y View Post
So far, it shifts fantastically but I have no idea how often the previous owner changed his transmission fluid if he even did it at all. What do you guys think?

If you have no idea what's in there, all the more reason to do it and know for sure what's is in there. Just make sure you follow the various DIY write-ups and do it right with the right fluid.

That said, I drained and refilled mine twice at 110k miles nearly 10 years ago and still shifts fine.
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Old 09-04-2019, 05:45 PM
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Yes. Drain and fill, drive a few miles, then drain and change filter, gasket and fill. That should get you to around 70% fresh fluid.
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Old 09-04-2019, 05:49 PM
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Quote:
Originally Posted by iLmon3y View Post
My torque converter went bad so I have to replace that but Iím thinking about changing my atf fluid and filter as well. My car has high mileage so Iím nervous that it might ruin the transmission more. So far, it shifts fantastically but I have no idea how often the previous owner changed his transmission fluid if he even did it at all. What do you guys think?


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I think you should state what year and model BMW you have for starters.

Changed mine at 117,000 miles and again at 165,000 or so miles.
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Old 09-04-2019, 05:59 PM
CSMBlack-540i CSMBlack-540i is offline
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Originally Posted by bmw blue View Post
I think you should state what year and model BMW you have for starters.
Title of posts says "Should I change the transmission fluid and filter at 156,000 miles? 2003 bmw 530i"

Hence 2003 530i is my take on model and year
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Old 09-04-2019, 06:00 PM
iLmon3y iLmon3y is offline
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Originally Posted by CSMBlack-540i View Post
Title of posts says "Should I change the transmission fluid and filter at 156,000 miles? 2003 bmw 530i"

Hence 2003 530i is my take on model and year


Lol I edited the post after he said that


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Old 09-04-2019, 06:07 PM
CSMBlack-540i CSMBlack-540i is offline
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Lol I edited the post after he said that
Might be easier just to edit your profile/garage/mein auto where it should be so it doesn't get asked over and over each time you start a new thread.
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Old 09-04-2019, 06:38 PM
Santaclaus4 Santaclaus4 is offline
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If you are replacing the torque convertor, just drain the rest of the fluid from the transmission and replace the filter at the same time. No need to flush and fill several times since the purpose of that method is to replace the fluid that won't drain from the torque convertor.
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Old 09-05-2019, 09:02 AM
Cirrusnine Cirrusnine is offline
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And, while you have the torque converter out, you will have easy access to the torque converter seal, which would be a good item to replace if you plan on keeping the car long-term.

This seal tends to leak over time and may cause a cascade of bad events due to low transmission fluid.

part #24201423382 - available at FCPEuro or your favorite BMW dealer.
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Old 09-05-2019, 12:14 PM
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Originally Posted by Santaclaus4 View Post
If you are replacing the torque convertor, just drain the rest of the fluid from the transmission and replace the filter at the same time. No need to flush and fill several times since the purpose of that method is to replace the fluid that won't drain from the torque convertor.
Agreed, I missed that in my haste of reading the post.
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Old 09-05-2019, 04:48 PM
edjack edjack is offline
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Originally Posted by Cirrusnine View Post
And, while you have the torque converter out, you will have easy access to the torque converter seal, which would be a good item to replace if you plan on keeping the car long-term.

This seal tends to leak over time and may cause a cascade of bad events due to low transmission fluid.

part #24201423382 - available at FCPEuro or your favorite BMW dealer.
Won't a rebuilt TC have a fresh seal, assuming he won't go to a breaker for a use part (maybe he will)?
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Old 09-05-2019, 07:19 PM
Santaclaus4 Santaclaus4 is offline
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Originally Posted by 540 M-Sport View Post
Agreed, I missed that in my haste of reading the post.
That's why I didn't quote you. I didn't want it to look like I was poking at you.
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Old 09-05-2019, 07:21 PM
Santaclaus4 Santaclaus4 is offline
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Won't a rebuilt TC have a fresh seal, assuming he won't go to a breaker for a use part (maybe he will)?
No, the seal goes on the transmission side and will not come with a new torque converter.
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