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Old 03-30-2006, 11:44 AM
Registered User
Join Date: Jul 2004
Location: Barrington, RI
Posts: 5,523
Front Crankcase Seal--Important to Replace?

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.


06 E320 CDI "Benson", Platinum Blue, 176k mi
06 E320 CDI "Rutherford", Black, 149k mi
91 300D "Otis", Smoke Silver, 130k mi
98 E300 "Murray", Silver, 133k mi, Stage 2 Rocketchip chip tuned (FOR SALE)

Twelve other MB's owned and sold
2002 Honda Odyssey 260k mi (want to name it "Homer," wife won't let me)
1961 Very Tolerant Wife
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Old 03-30-2006, 11:48 AM
Dale 240D
Join Date: Mar 2006
Location: Gainesville, Fl
Posts: 84
front oil seal.

Keep an eye on your oil level. if it starts to get appreciably lower faster than normal, replace the seal. if you can live with oil being flung around under your hood, don't worry about it. it WILL just get worse however and eventually need to be replaced as you lose more oil faster. NOTHING is more important to the life of your engine than having enough oil and changing it when needed.

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Old 03-30-2006, 11:49 AM
Registered User
Join Date: Dec 2002
Location: RI shore
Posts: 2,937
You can drive it like that for years, depends on your nuisance tolerance. Obviously, you need to keep an eye on your oil level.
'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.
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Old 03-30-2006, 12:09 PM
Registered User
Join Date: Nov 2004
Location: Nova Scotia, Canada.
Posts: 6,510
A lot depends on the overall condition of the car. If pretty good and you let one issue after another accumulate at some stage you will not want to repair anything. That is why I suspect a lot of cars land up on ebay for disposal or worse if salvage yards are that. Depends on the individual but as others have mentioned driving with a poor crank seal will most likely not finish you. Oh yes and if you cannot or are unable work on your own car unless it is nearly in pristine condition it might cost you. It can be very tough financially to keep it up. Sweat equity seems to be required for most of us it seems.

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