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Good job on finally getting all your research done and giving it a go. I know you have been investigating fluids for quite some time now.

Nice write up as well:thumbup:.

The magnets seem to indicate your tranny has faired well so far in its life. How many miles did you say? EDIT: Oh i saw in one of your pics 85K The collected metal on mine looked very similar to your pictures when I did it at 60k.

Count yourself lucky on the ease of getting to the fill plug. Us XI folks need to drop the front driveshaft just to remove that sucker...:mad:. On the bright side once its down its then possible to get a torque wrench on it :D
 

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Just for reference I'll post up some of the information I found when researching whether Dexron VI was now appropriate for the GM 5L40E tranny. As some may have already discovered, Cadillac uses the 5L40E transmission in some of the 1999-? CTS models and GM says Dexron VI is now appropriate for them as it is backwards compatible with the Dexron III original fill.

What many folks dont know is that just because GM chose the same name for the BMW/CTS transmissions (5L40E) doesnt mean that they are the exact same transmission. Refer to the attachments for the specific examples.

What I was never able to conclude with taking the specific differences into account is whether the Dex VI would then indeed be recomended by GM for the BMW 5L40E. More than likely it would be just fine (As BMW has superceded the original ETL-8072 part # with a Dexron VI part #) but would it be preferred to the original fill? That is the question.*Note: I ended up going with the Castrol Import Multivehichle ATF for my fill and drain refill cycles as it meets the ETL-8072b spec.

Obviously we can obsess about this to no end but as Starless has shown -- For peice of mind you can not go wrong with what was put in there originally.

The next question will be what do for peice of mind when we can no longer get the original fill anywhere?
 

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I highly, highly doubt that. I used Meistersats filter. It looked absolutely identical to the old genuine BMW filter except the letters "BMW" were not printed on it. No, no slippage.
I have not done any research on that but I "think" that this company Meistarsats is the Original Equipment Manufacturer of filters for BMW...Who are those users by the way and which brand filters did they use?
Thanks for the fast response. I will see if I can find the thread where I was questioning another user on their statement of non OEM filters causing slippage, I believe it was user FiftyCent or something like that. I can understand the fluid causing the slippage but the filter? I gave them the benefit of the doubt but I just can't see that being the case. I do claiming some individuals experienced immediate slippage after the fluid/filter change. So far you are the exception to their claim.
Same filter that I used almost 18,000 miles ago. So count me in as another "exception" as I have had no problems. Bought it from from Pelican Parts and they indicate that Meistersatz is an aftermarket supplier. All I know is that every part in that kit matched the OEM part I took off the vehichle identically.
 
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