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Old 01-17-2013, 10:51 AM
Supercourse Supercourse is offline
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Location: British Columbia, Canada
Join Date: Feb 2008
Posts: 3,890
Mein Auto: 2004 X3 2.5i
Yes, I think that's the point.

DEX VI may claim to be downward compatible with the original fluid in a 2004 - 06 model, but unless you are having a complete power flush done, probably best to use something known to be closer to the original fluid.

In may be perfectly fine to do a drain and fill with DEX VI, but thinking about 2 fluids mixing together, it just seems better if they are as similar as possible in properties, additives, weight and even color (but that may be immaterial).
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