Is sludge at all likely in modern BMW engines?
That is, without extreme neglect, PCV system issues, or something like coolant getting into the oil without it becoming evident.
I've not thought about sludge as a possibility in many decades.
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2017 M240i: 25.9K, 28.9 mpg, MT, Sunroof Delete, 3,432#, EB, Leather, Driving Assistance Package, Heated Front Seats | Sold: E12 530i, E24 M635CSi, E39 520i, E30 325is, E36 M3 (2)
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