Tim_WS6

iTrader: (16)

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?

Optimus_Prime

iTrader: (4)

When you start your car do you let it idle for a long period of time?

MeentSS02

iTrader: (11)

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.

Fedge

iTrader: (3)

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

GuitsBoy

iTrader: (4)

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.

vettenuts

iTrader: (4)

But if you are running a cooler thermostat you may not be getting the oil hot enough to eliminate it.

navymitch12

iTrader: (1)

blown head gasket...its coolant

lmt0705

iTrader: (7)

i started noticing that in my car and a week or so later I found that I lifted a head.

Proud2bSS

iTrader: (2)

Dayum! That would suck.....

davered00ss

iTrader: (4)

I thought a blown head gasket. How's the engine temp & coolant level?

navymitch12

iTrader: (1)

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.

GuitsBoy

iTrader: (4)

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?

98slowt/a

iTrader: (14)

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

97 Z Me Go

iTrader: (11)

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

navymitch12

iTrader: (1)

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?

GuitsBoy

iTrader: (4)

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.

TransAminal

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.

navymitch12

iTrader: (1)

ok so if that is what you are calling it (not saying your wrong) what would cause this to all the sudden happen.

TransAminal

Plugged up PCV system, or making short trips in the cold and not allowing the engine to fully warm up.

mondi2002

iTrader: (11)

Outside Air Temp (colder)