Quote:
Originally Posted by crystalworks
The additive could "fix" the trans, or it could grenade it. No way to tell before doing it. It shouldn't... but we all know how that goes.
No codes at all eh in the EGS? If you are sure the trans is the source, and you are comfortable doing the work, and you really want to keep this X5, then I'd follow:
Step 1: Replace tube seals, bridge seal, mechatronic sleeve, trans pan/filter, and fill with Valvoline Maxlife multivehicle. Clear adaptations.
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Emphasis mine
Still not sure what transmission you have, but....
I did this to fix my issues, which were exactly what this video said in the first 90 secs or so (found it after I did the fix lol) and my shudder issues are gone -
https://youtu.be/aX0bhui8UXA
I've done a lot of work on mine with very little experience (just lots of confidence

) in very expensive areas but never ever ever wanted to touch the transmission. Finally got up the nerve to do it.
**IF** your issue is transmission related, crystalworks advice is the way to go.
Note for future readers: I bought my parts at thectsc.com, they sent everything except for 1 tube seal (they left it out of the order by mistake) but then promptly sent a whole new complete set right away after I let them know (great customer service, even over the weekend, highly recommend).