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WTF condesation milky color on my oil cap!!

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Old 01-30-2008, 06:33 PM
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Default WTF condesation milky color on my oil cap!!

guys i have been tracing down my hesitation problem on my car and as i opened my oil cap, i noticed that it had a milky color and 1 drop of a clear water color! i looked into the elbow of the oil cap snout and it was also all a milky color as well!! i looked deeper into the rocker arm and it looked fine, i pulled the dipstick and it was not milky but looked like a lighter brown then yesterday, please i hope this is not my head gasket!! i treat my car really well and Never over heated it!! somebody told me it is normal that condensation is trying to rise to the top to escape! or could it be the pcv system is not functioning properly???
Old 01-30-2008, 06:37 PM
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Sometimes oridnary condensation can cause the milkiness in certain areas.
In your situation since you said the oil is clearer then before I am leaning toward a head gasket.
Keep a close eye on the oil.
Old 01-30-2008, 06:39 PM
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hummm i hope not!! im gonna go do an oil change, just to be a little safe and make sure
Old 01-30-2008, 06:41 PM
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Is your radiator low? If your radiator is staying up there then its more than likely not a head gasket. My cap has the same milky residue and has had it for the last 50k milesand hasnt used any coolant. Just take it out on some nice long drives and get the oil good and hot so it can burn off any moisture that accumulates in it.
Old 01-30-2008, 06:42 PM
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Originally Posted by 30thanniv
Sometimes oridnary condensation can cause the milkiness in certain areas.
In your situation since you said the oil is clearer then before I am leaning toward a head gasket.
Keep a close eye on the oil.
+1, good luck though.
Old 01-30-2008, 06:44 PM
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Most likely condensation, how many miles were on the oil when you checked it with the dipstick?
Old 01-30-2008, 06:52 PM
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there is 1,500 miles on the oil but the car has been sitting long due to my exhaust and in rain and alot of humidity! and its also lik a yelloish kinda lik little dot on the cap too! but my car has never done this before man!
Old 01-30-2008, 07:01 PM
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sitting and short trips are the main cause of moisture contaminating oil. avoid them
Old 01-30-2008, 07:05 PM
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Originally Posted by ae13291
there is 1,500 miles on the oil but the car has been sitting long due to my exhaust and in rain and alot of humidity! and its also lik a yelloish kinda lik little dot on the cap too! but my car has never done this before man!
drain ALL of your oil when the engine is cold and let it drain for a couple hours.. just replace the filter and refill the oil and check it again after a couple hundred miles. it should be alright
Old 01-30-2008, 07:09 PM
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ok guys! im going to go ahead an do my oil change now!
Old 01-30-2008, 07:09 PM
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If the oil that comes out is fine, then don't worry about it. I just cleaned a load of that crap off my oil cap. Literally gunked in the stuff.

It's just condensation.

Now if you notice missing coolant and the oil out the drainplug looks like that, then you have a problem.
Old 01-30-2008, 07:10 PM
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Originally Posted by ae13291
ok guys! im going to go ahead an do my oil change now!
make sure the engine is COLD so all the oil is settled at the bottom
Old 01-30-2008, 07:37 PM
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ok! i have to tak my brothers car to go and get 1 more quart!
Old 01-30-2008, 07:57 PM
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Originally Posted by LS1>girlfriend
sitting and short trips are the main cause of moisture contaminating oil. avoid them
That's partially correct.

Short trips are the worst. However, if the car is sitting inside somewhere, short term storage will not cause significant moisture contamination in the oil as seen here.

My '98 sits A LOT (all winter in fact). I've never had the milky white crap on the oil fill cap. On the other hand, I've had that issue on other cars of mine that were used mostly for short local driving. My '96 Bonneville has that issue right now, because my wife is driving the car for her 3 mile commute to work every day. When I used to drive that car 75 miles a day, it never had that issue. On the flip side, her old car also had that issue, but once I started using it for my long commute, guess what, the problem was gone.
Old 01-30-2008, 08:00 PM
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man bro good luck
Old 01-30-2008, 08:13 PM
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Originally Posted by LS1>girlfriend
sitting and short trips are the main cause of moisture contaminating oil. avoid them
Sitting + short trips + winter weather = what you found.

It's totally normal and means ou need to start driving the car more.

Re'
Old 01-30-2008, 09:53 PM
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yea thanks everybody, i just changed my oil, and yea my oil was black as night! so yea im sure its not a problem! and i guess im going to start warming up the car more, since my maximum driving distance is lik 5 miles and the car fully warms up in 2 miles! but thanks alot guys, i was just freaked out! i thought my head gasket could have been out!!
Old 01-30-2008, 10:02 PM
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I put a catch can before my engine's pcv valve as it goes behind the throttle body. The engine never did lose enough oil to be measured but get this; the catch can collects pure water. I'm getting as much as two tablespoons in 50 miles. If this water vapor wasn't being caught in the can I'm sure I'd be seeing some signs of it collecting on the cap etc....
Old 01-30-2008, 10:08 PM
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good to hear its ok!
Old 01-30-2008, 10:14 PM
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Originally Posted by RPM WS6
That's partially correct.

Short trips are the worst. However, if the car is sitting inside somewhere, short term storage will not cause significant moisture contamination in the oil as seen here.

My '98 sits A LOT (all winter in fact). I've never had the milky white crap on the oil fill cap. On the other hand, I've had that issue on other cars of mine that were used mostly for short local driving. My '96 Bonneville has that issue right now, because my wife is driving the car for her 3 mile commute to work every day. When I used to drive that car 75 miles a day, it never had that issue. On the flip side, her old car also had that issue, but once I started using it for my long commute, guess what, the problem was gone.

same thing with my car +1


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