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Sludge Examples:
E46, inline 6 cylinder, extensive engine sludge apparent. Found on another forum. This particular engine went 60,000 miles (96,000 km) without any oil or filter changes. This was the result. This illustrates the difference between sludge from greatly extended (abusive) maintenance intervals vs the condensate or 'cheese whiz' that many X5 owners have noted under the oil filler cap.
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2007 X3 3.0si, 6 MT, Premium, White
Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
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