water under oil cap...?
Thread Starter
Launching!
Joined: Oct 2006
Posts: 224
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From: Tinley Park IL.
water under oil cap...? hey guys so i changed my oil the other day and the oil was perfectly fine. it looked just like used oil.....so i went to go pour in the new oil and when i opened the oil cap i noticed water under it and on the bottom of the cap the oil was like peanut butter and then today i noticed water again under my oil cap....anything to worry about????? The engine kind of studered when start up too.
That gunk on the oil cap is supposed to be built-up moisture from inside of the engine that hasn't been properly burned off, such as if the car hasn't been driven far enough for example. I can't find the words to explain it right now, but if your coolant level is o.k. then I wouldn't worry about it. Do a search on oil-cap residue and you'll find that alot of cars have this happen to them as well...
i do a lot of small driving, like 5 miles here and there, and i have the same problem.. its because the engine isnt getting warm enough to burn the condensation out
if your oil came out perfectly fine, im willing to bet everything is ok
if your oil came out perfectly fine, im willing to bet everything is ok
i actually discovered this when i put some oil in my car on wednesday, i got pretty scared, but my coolant looks fine
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Yeah i be that's it...
Look guy, you hardly know what you are talking about.. I too just canged my oil this evening and had the same "condensation" under my oil cap.. It happens as weather changes.. Here in TX it has been 80deg one day and 20deg the next.. Your car is fine buddy...
Look guy, you hardly know what you are talking about.. I too just canged my oil this evening and had the same "condensation" under my oil cap.. It happens as weather changes.. Here in TX it has been 80deg one day and 20deg the next.. Your car is fine buddy...
12 Second Club
Joined: Apr 2002
Posts: 680
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From: Cave Creek, AZ- Canada Also.
That gunk on the oil cap is supposed to be built-up moisture from inside of the engine that hasn't been properly burned off, such as if the car hasn't been driven far enough for example. I can't find the words to explain it right now, but if your coolant level is o.k. then I wouldn't worry about it. Do a search on oil-cap residue and you'll find that alot of cars have this happen to them as well...
I almost didn't get a sale on a rare 1966 big block because of this, then I ran it up to temp and it disappeared. The buyer was a big name SB2 builder and the first thing he said was head gaskets, he suggested running it up to temp, if it stays it's coolant leaking into the oil somewhere, if it goes away it's condensation from the weather or even from not running it in a while.
Teching In
Joined: Mar 2009
Posts: 15
Likes: 0
From: Longwood, FL
Although this could be caused by the weather, it would still be best to pressure test the system for leaks. Just because you don't notice a leak doesn't mean that there isn't one. Look for the oil to change color generally to a milky white or oil to be on top of the coolant when you check it in the morning. Play it safe and look into it a little more. It could be nothing, but if it's not, you want to find out as soon as possible.
