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Old Jan 23, 2010 | 10:02 PM
  #1  
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btacarlton
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Exclamation HELP!!!

Just pulled the oil filler cap off to start an oil change and this is what I saw. Smells like oil and fuel, but doesn't look like oil



There is more in the top of the filler tube. Any ideas?
 
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Old Jan 23, 2010 | 11:12 PM
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I'm not a mechanic, but it looks like water mixed with the oil. Head gasket leak? Does it run ok? Rough idle? Is your coolant level low?

Good luck.
 
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Old Jan 23, 2010 | 11:24 PM
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Does the oil on your dipstick resemble that, or just your oil cap? If its just the cap, its really nothing to worry about. That's condensation mixing with the oil, most likely due to a few too many short duration trips without letting the vehicle warm up to full operating temperature.

Do you live only a couple of miles or so from work/school by chance?
 
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Old Jan 23, 2010 | 11:33 PM
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Just in the cap and in the top of the filler neck. I don't live close to work though, but I'm sure I am guilty of a few trips to the gas station or store with out fully warming the truck up. Hopefully that's the issue. Truck runs fine. Thanks.
 
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Old Jan 24, 2010 | 12:52 AM
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hate to say this phrase...but, "that is normal"


the 5.4 3v motor loves to condense water from the atmosphere. and short trips don't get the motor hot enough to burn that water off and get sucked out the motor via the PCV


just wipe it out, and try to avoid those short trips...especially in the colder weather
 
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Old Jan 24, 2010 | 12:55 AM
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Agreed, totally normal. Mine has the milky substance on the cap all the time.
 
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Old Jan 24, 2010 | 09:25 AM
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Thanks everyone.
 
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Old Jan 24, 2010 | 11:40 PM
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Yeah, it's just where the moistue in the air over the warming oil / internals condenses against the cooler under surfaces of things like caps and valve / cam covers and mixes with oil mist. Thoroughly warming the engine warms those surfaces as well. It ain't all your oil.
 
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