Tranmission Oil Change Yes/No

[richf80]

Sharing analysis from my DCT fluid after 77k miles.

[Jbonly21]

Originally Posted by richf80

Sharing analysis from my DCT fluid after 77k miles.

Nice, I guess 100k sounds good to me, thanks for posting. Do you drive your car hard, or track it ?

[richf80]

Originally Posted by Jbonly21

Nice, I guess 100k sounds good to me, thanks for posting. Do you drive your car hard, or track it ?

Yup! Unknown number of autocross events and several track days.

[ALCOBENDAS]

Resumen ¿the oil its ok ???

[Poiseuille]

Originally Posted by richf80

Sharing analysis from my DCT fluid after 77k miles.

well, that seems like good news, thanks for sharing that.

[richf80]

Originally Posted by Poiseuille

well, that seems like good news, thanks for sharing that.

No problem! Hope it helps others decide.

[Breaking Bad]

Originally Posted by G4BR13L

Good luck finding a BMW tech that will replace the DCT oil. They will not do it, because BMW does not recommend it there is no clear procedure and a lot can go wrong actually reducing the lifetime. I have seen posts about the DCT oil still looking very good after 100k miles. I don’t understand why people insist on having it replaced every 50k miles but please be my guest. Synthetic oils and components of today cannot be compared with those from a decade ago, the mechanics were in the past trained to replace oil every 5k miles or sooner who learned from teachers that were taught the same. If I have to replace my DCT after 220k miles who gives a sh*t, almost nobody drives their car for so many miles. Don’t exaggerate with these unneccessary fluid changes people but do as you please. I drive my car for 5 years and then buy another but keep this one as 2nd car. But al I going to use my current car as a daily driver? Absolutely not so it does not really matter to replace the DCT fluids every 50k miles. Proof me wrong! Replace it and capture some and send it to a lab for analysis and show us here how the oil looks.

I am just one example but I have 205,000 miles on my 2013 X5 and never changed the transmission fluid. So far I would call it "lifetime" fluid. No problems yet, the transmission has always run great.

[Mospeada]

i just did mine at 20k miles. i track 10 weekends a year and had 40 track days on it. i do fluid flush 2-3x the service interval . so oil change every 5k , rear diff at 25k, etc. got the kit from FCP euro, $400 for labor at the dealer.

car feels the same, less buckling on downshift , it's probably too early, i could have waited till 30k miles.

.if not tracked change at 100k miles. rear diff at 50k miles per service manual. this Getrag dct is well known and well built.