On another thread, this issue came up...but I thought I'd create a thread that directly addresses the question.

Does soot that enters through the intake manifold, via a functioning EGR, contribute to the soot in the engine oil? From various sources, I thought the answer to this question was definitely "yes." However, at least one person with a lot more knowledge than I have says "no," at least not to any significant degree.

Any answers and explanations are appreciated. Thanks.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 157k miles
06 E320 CDI "Rutherford", Black on Tan, 175k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 70k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife