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Old 01-06-2013, 04:22 PM   #1
Wormydog
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Exclamation Yellow Sludge in Oil Separator pipes!!!!!!

So my oil separator pipes have yellow sludge build up inside them as well as trace amounts under the oil cap. Is it safe to drive for 2 weeks like this while i wait on the replacement parts ? And is there any thing i can do right now while i wait? thx!
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Old 01-06-2013, 04:36 PM   #2
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Originally Posted by Wormydog View Post
So my oil separator pipes have yellow sludge build up inside them as well as trace amounts under the oil cap. Is it safe to drive for 2 weeks like this while i wait on the replacement parts ? And is there any thing i can do right now while i wait? thx!
Don't worry about it.
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Old 01-06-2013, 04:40 PM   #3
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Correct me if I am wrong, but sludge build up generally means not doing oil changes enough if I remember right.
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Old 01-06-2013, 04:53 PM   #4
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Correct me if I am wrong, but sludge build up generally means not doing oil changes enough if I remember right.
Yellow sludge in the CCV lines are from condensation bonding with CC gases and forming a sludge, it's not sludge in the sense that you are thinking of.
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Old 01-06-2013, 04:57 PM   #5
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oil changed every 2500 miles...I'll call it "goop" for now on not to confuse anyone...Honestly Dont worry about it?
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Old 01-06-2013, 04:59 PM   #6
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Yellow sludge in the CCV lines are from condensation bonding with CC gases and forming a sludge, it's not sludge in the sense that you are thinking of.
Yes silly me was thinking of the other sludge...damn bmw xD to many kinds of sludge to talk about haha
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Old 01-06-2013, 05:01 PM   #7
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oil changed every 2500 miles...I'll call it "goop" for now on not to confuse anyone...Honestly Dont worry about it?
Seriously don't worry about it. You don't have any of the symptoms of a clogged CCV, plus you live in Arkansas, you aren't dealing with the cold temps we deal with.

Last edited by 7xWDC-MSC; 01-06-2013 at 05:03 PM.
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Old 01-06-2013, 05:03 PM   #8
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yes i am
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Old 01-06-2013, 05:06 PM   #9
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yes i am
to the symptoms or the cold?
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Old 01-06-2013, 05:39 PM   #10
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You really need to verify that the engine is working at the proper operation temperature. If the engine is running cold you will have more condensation in the crankcase that does not burn of and will condense in the oil fill cap area.

Forget about the dash gauge, you need to bring up the Hidden OBC Menu and check the coolant temp. It should be consistently running between 88-95C.

See 3rd link below in my signature.

These stats soft fail and open too early and run cold when they go bad. This is a common problem.
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Old 01-06-2013, 05:46 PM   #11
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yes i am going to replace them , and yes i live in Arkansas and usually it doesnt get too awfully cold...but on Christmas it snowed alot and has been around 19 degrees almost every morning. What temp is that in Fahrenheit ?
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Old 01-06-2013, 05:54 PM   #12
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Yes this is normal if you are using a synthetic oil in the winter.
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Old 01-06-2013, 06:09 PM   #13
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yes i am going to replace them , and yes i live in Arkansas and usually it doesnt get too awfully cold...but on Christmas it snowed alot and has been around 19 degrees almost every morning. What temp is that in Fahrenheit ?
19??? is that a trick question? You've got a '99 there is bound to be some build up.
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Old 01-06-2013, 06:20 PM   #14
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Do me a favor and report back what the engine temp is running, this would be helpful for many to understand more about this issue.

Since you live in the South, you may never realize your thermostat is weak/soft until you really pay attention to it.

Remember that the coolant gauge is buffered and will stay at the 12'oclock position over a 50F range so you cannot really rely on the gauge to keep you properly informed of the thermostat condition.
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Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

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Old 01-06-2013, 06:58 PM   #15
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Talking about the 88-95c, and to my surprise i had zero when i replaced the "separator to valve cover" hose 3 weeks ago.
I broke it when i replaced the valve cover gasket. But all my troubles began on the morning after it snowed...battery even started funny
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Old 01-07-2013, 11:20 AM   #16
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Talking about the 88-95c, and to my surprise i had zero when i replaced the "separator to valve cover" hose 3 weeks ago.
I broke it when i replaced the valve cover gasket. But all my troubles began on the morning after it snowed...battery even started funny
jesus, how the heck you could replace just a part of the CCV system without tearing the rest of it to shreds since it's all bacon by this point anyway in your 1999 is beyond me.

I had the yellow "goo" appear a few times in my car under the oil cap. It comes from running the car around town and not really letting her warm up fully. If you do a lot of around town driving, then get her out on the highway and run her for a good long time. Hour or more, or a road trip even better! You should notice the yellow goo going away under the oil cap. But please don't ignore the rest of the ccv system, you should really replace it all as soon as you can, you may have cracked another hose replacing that one you already did or the separator, they are so so so so brittle, which is why most DIY's tell you to just break it apart in your hands when removing it rather than try to remove it the way it was connected.
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Old 01-07-2013, 11:24 AM   #17
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my ccv system crumbled when i took it apart haha
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Old 01-07-2013, 11:32 AM   #18
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So what temp is the engine actually running at?

Again, would be interested to see if many of these problems are due to cold running engines.

Kind of like dealing with my teens, how many times do I have to ask!
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 01-07-2013, 01:34 PM   #19
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Example of carnage that occurred when I removed my wife's:

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Old 01-07-2013, 03:05 PM   #20
Wormydog
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@Trizzuth: I removed the power steering reservoir , from there you just remove the oil filter sensor (or whatever that is exactly) and you got a straight shot to where it meets the separator. You can't see it but there is just enough room to squeeze you hand in there and get it done. @jfoj: do I go into the secret on board computer to the temp and just take off?
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