As I understand it, the 602 engine does not have a PCV valve but rather just an elbow that connects the valve cover to the breather tube. I'm noticing oil residue building up around the base of this elbow. Is this simply something to keep on eye on or something I need to get replaced ASAP?

Thanks.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Depends on how oily you like your engine. The rubber insert is rock hard and shrunken, allowing vapor to deposit oil on the valve cover.

Get a new tube, elbow, and grommet -- you are going to break the old one getting it out, they are VERY brittle by now.

Replace the oil filler cap while you're at it, they leak too.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!

You can buy the grommet and elbow and also a new gasket for the cap for very little money.A little seepage in that area is nothing to worry about,unless you like to have a clean engine. My $.02 Don

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Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles