Quote:
Originally Posted by mmns999
Thanks for all the replies everyone. I am glad to see that the F25 forum is active.
May I ask, why just a drain and fill and not a flush?
Thanks in advance.
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A transmission flush gets hooked up to a machine that evacuates all the trans fluid and it can also clean the build up inside the tranny. The problem is that all that build up can sometimes end up potentially damaging components or block tight passageways. When fluid is forcefully pushed back into the transmission, debris can be dislodged and possibly block narrow channels or one-way valves.
That’s why at 96k, only a drain and fill is recommended. Also, there is a very specific way to do it…if you have ISTA, you can follow the procedure and do the oil balancing in the program. If you dont have ISTA, you can find the DIY here is this forum…..simply put, drain old oil, drop pan, install new pan, fill until oil comes out of fill plug, start car, go through gears, add oil again until it comes out of fill hole, then go driving,
…or watch any of the great FCP euro videos on changing fluids, plugs, and coils.
https://x3.xbimmers.com/forums/showt...sfer+box+fluid