Question about Mercedes-Benz E320

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Condensation under oil filler cap - E320 Mercedes-Benz Cars & Trucks

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  • peppianne Jul 31, 2008

    it has put some light on the subject ,but its milky small substance that accumulates under the cap.some people say its not driven regular which is true,a good run might be in order.. Thanks Joe...

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2 Answers

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  • Mercedes-Benz Master
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If its the color beige light brown and there none in the engine or oil dip stick there nothing mush to woory about it the engine vent or pcv is probably dirty and not doing its job but if you have that all over prestone in the engine (head gasket) job that big trouble thanks pierre

Posted on Jul 31, 2008

  • pierre laplante Aug 01, 2008

    its exactly what my answer mean if its only under theoil cap do the basic stuff pcv nothing to worry about its like people who go to the grocery store and church with the car condensation stay in the muffler everything his rusty in the muffler rust out same kind of car daily driver muffler last foreever same with you dont drive mush oil get hot but no enought to burn that condensation im glad for you its not a big problem take care pierre

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  • Mercedes-Benz Master
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Car spitting some oil on the filler cap may be normal, if it spits out oil from the cap there is a problem. check oil level and eventually have an oil change.

Posted on Jul 31, 2008

6 Suggested Answers

  • 1861 Answers

SOURCE: Automatic - overheating blowing coolant

Most likely the thermostat is sticking. Get the system flushed (get that rusty liquid out of the system), replace the thermostat & put in new coolant. Should fix it.

Posted on Sep 16, 2008

  • 1 Answer

SOURCE: engine blowing oil from oil filler cap

I had the same problem. I changed the pcv valve and checked the hose. It still did the same thing. Then I checked the metal tubing that the hose connects to and found it was full of hardened gunk. I sprayed PB Blaster into the tube let it soak for awhile. Then took an old choke cable, put it on a drill and ran it into the tube like a drain snake. It took a while of doing this over and over but eventually got it cleared out. Now, no more oil all over the engine and hood compartment.  

Posted on Mar 21, 2009

SOURCE: oil coming out of engine oil filler cap even

The engine breather pipe seems to be blocked.
It may also damage the oil seals.

Posted on Oct 27, 2009

  • 200 Answers

SOURCE: pressure behind the oil filler cap , pushing oil out on to motor

Replace the PCV valve.

Posted on Feb 07, 2010

FitzOriginal
  • 842 Answers

SOURCE: Hi i have a vauxhall

I'm afraid this means your head gasket has gone. What you are seeing is emulsified oil (Oil and water that have been whipped up together by the engine to create an emulsion). There is only one cause for this: Water leaking into the oil from the cooling system. ...And there's only one way this can happen, which is a breach between an oil way and a water way. 99% likely this is a head gasket failing, with a small chance that you have a cracked head.

It's not a huge job for a "Local Mechanic" rather than a main dealer to undertake, but without action it will get worse and worse.

Posted on Apr 19, 2011

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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Posted on Jan 02, 2017

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1 Answer

How could I really tell if my head gasket really blown step by step


check running temperature,check oil filler cap to see if there is a creamy residue on the bottom of the cap indicates oil/water mixing same check of radiator cap,finally check oil dipstick if this shows contaminated oil this is a positive indication of head gasket failure, the rad/oil cap check may only indicate condensation reaction. HOPE THIS HELPS

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It's likely that moisture under your oil filler cap is due to the wide temperature ranges we see along with running short trips. Drive on!

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