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What is this in my oil?

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Old Jan 21, 2007 | 02:18 PM
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Default What is this in my oil?

i went to check my oil today and theres all this yellow crap inside the cap. it looks like theres moisture in there and it kinda smells like gas. is there something wrong and what could cause this?



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Old Jan 21, 2007 | 02:20 PM
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When you start your car do you let it idle for a long period of time?
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Old Jan 21, 2007 | 02:26 PM
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If you do a search, I'm sure you'll come up with the same thing, and usually posted from around this time of year. It is usually associated with short trips during cold weather when the oil doesn't get hot enough to burn off whatever is in there. It just collects on the bottom of the cap...nothing wrong with it. Just clean it off, and keep that in mind when you hop in your hoopty to run a short errand.
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Old Jan 21, 2007 | 02:32 PM
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i was told that's bad pcv going on...i had the same issue and once i changed the hose (clogged and ****) and valve, it more or less went away
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Old Jan 21, 2007 | 02:43 PM
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You probably take a bunch of short trips and moisture has accumulated in the oil. Might try taking a nice long half hour to one hour trip to boil out the moisture. Ill be its gone after that.
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Old Jan 21, 2007 | 04:09 PM
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Originally Posted by GuitsBoy
You probably take a bunch of short trips and moisture has accumulated in the oil. Might try taking a nice long half hour to one hour trip to boil out the moisture. Ill be its gone after that.
But if you are running a cooler thermostat you may not be getting the oil hot enough to eliminate it.
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Old Jan 21, 2007 | 04:54 PM
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blown head gasket...its coolant
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Old Jan 21, 2007 | 05:16 PM
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i started noticing that in my car and a week or so later I found that I lifted a head.
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Old Jan 21, 2007 | 05:38 PM
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Originally Posted by navymitch12
blown head gasket...its coolant
Dayum! That would suck.....
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Old Jan 21, 2007 | 05:46 PM
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I thought a blown head gasket. How's the engine temp & coolant level?
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Old Jan 21, 2007 | 05:49 PM
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my money is still on blown headgasket....that is coolant and its getting in there some how and the most likely choice would be headgasket.
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Old Jan 21, 2007 | 07:55 PM
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Are you losing coolant? Blown head gasket will have you refilling your coolant all the time. Also, do you have a sweet smelling white smoke coming out the tailpipes?
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Old Jan 21, 2007 | 07:59 PM
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if you are losing coolant more than likely you have lifted a head and you are mixing coolant in with your oil,and i would not drive that car any more because antifreeze eats the hell out of bearings

just a fyi

hopefully it is something really simple but prepare for the worst
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Old Jan 21, 2007 | 08:04 PM
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Could be short trips, but On the 3.8/3.1/3.4 motors when you see that its almost 100% that the lower intake is leaking or blown head gasket. On the ls1 it cant be the lower intake of course. But that looks like coolant mixing with oil.

Kyle
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Old Jan 21, 2007 | 08:12 PM
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it depends on how bad the gasket is blown.....and where the coolant is going. if it is a small prob it will just push a little coolant past into the oil. Even still where else would he be getting coolant into his oil from?
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Old Jan 21, 2007 | 08:15 PM
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Its real easy. If the coolant is full, its not a head gasket. Ive seen this on my car numerous times. Ive seen posts here numerous times. Everyone screams headgasket, but then they find the radiator still full. If the radiator is a few inches low, then its worth digging a little deeper. Get it pressure tested to find out for sure.
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Old Jan 21, 2007 | 08:35 PM
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Same thing happened to my LS1. I opened the oil cap one day, and there was yellow gunk all over the inside, along with moisture and more yellow gunk on the dipstick. I'll admit, first thing I said was head gasket. I pulled the PCV system apart (had it disconnected due to oil consumption) and it was all plugged up with crap. However, the oil on the dipstick was clean and brown, no water spots or gunk there, which told me that it most likely wasn't a head gasket.

I cleaned out the oil cap and dipstick, changed the oil, and converted to breather filters on both valve covers. Also drilled out the oil cap and stuck a breather filter in that to vent it out.

Checked it a couple weeks ago, and it seems good. Still a slight amount of condensation, but thats normal. Not even close to the amount of crap that was in there before. I also raised the temps on the electric fans via my Hypertech tuner, from 180 degrees to 195 "optomized", so that the motor would get warmer and burn off more moisture.
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Old Jan 21, 2007 | 11:13 PM
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ok so if that is what you are calling it (not saying your wrong) what would cause this to all the sudden happen.
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Old Jan 22, 2007 | 09:53 AM
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Originally Posted by navymitch12
ok so if that is what you are calling it (not saying your wrong) what would cause this to all the sudden happen.
Plugged up PCV system, or making short trips in the cold and not allowing the engine to fully warm up.
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Old Jan 22, 2007 | 02:17 PM
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Originally Posted by navymitch12
ok so if that is what you are calling it (not saying your wrong) what would cause this to all the sudden happen.
Outside Air Temp (colder)
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