I am told that the culprit for my oil leak is my front crankcase seal and that it needs to be replaced. The spotting on the driveway seems pretty bad, but there is no appreciable drop in level on the dipstick.

My question: is this purely a cosmetic issue, or is there some reason other than cosmetic that I need to get this fixed? I am not a DIY but am very cheap.

Thanks!

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 160k miles
06 E320 CDI "Rutherford", Black on Tan, 180k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 79k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife