That's about $84 saved for a 7 liter drain and fill or $120 for a full 10 liter replace all the fluid service that comes up every 30k/few years...on a vehicle well known to kill transmisions anywhere from 40k up?

Well, if your tranny doesnt agree with Blackstone, at least you have $120 to put towards fixing it.

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04 X5 3.0i auto
03 X5 4.6is