Quote:
Originally Posted by Bimmer-Bob
Especially if just doing a drain and fill. I've heard that an actual flush can be detrimental ("stirs up sediment"), no idea if that has any truth to it.
With burnt, black fluid, I imagine it might take a few successive drain and fills to get enough of the bad stuff out?
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Using compressed air through the cooler line with the pan and filter off (TC drained as well) will get 90 + percent of the old fluid out. The remaining amount is inconsequential.