Milky catch can

[DirtDog]

So before I started to drive today I decided to check all my fluids and drain my catch can.
Well here's the results



I checked my oil through dip stick and let a little out in a pan and it looks fine. Any idea why the catch can looks like anti freeze is in it?

[Fivefingerdeathpunch]

Just looks like alot of mositure got sucked into the catch can, kinda the same thing that happens when people pull there oil cap in the colder months on vehicles that do short trips.

Though on the oil cap its just a clump of cheese, that can must mix em because there is pressure.

[DirtDog]

Is it anything I should worry about?

[Fivefingerdeathpunch]

If the motor oil on the dipstick is not milky, then you have no problem in my mind.

[DirtDog]

Hmmmm....I haven't noticed any coolant disappearing or anything and I thoroughly checked everything and that's it as far as milky oil

[Fivefingerdeathpunch]

And if the car sat for a long time and had many days of bigger temp swings, moisture will build up inside the engine. Like of the inside of the block.

[DirtDog]

Lol. Yea and I guess three weeks of sitting every two weeks could cause that

[02NavyBlue]

And if the car sat for a long time and had many days of bigger temp swings, moisture will build up inside the engine. Like of the inside of the block.

Haha I remember that from family guy.

Yeah I used to do all short trips and the oil cap would get moisture on it, so much to the point it would drip down, get in the oil and get foam on the oil cap. Only happens in the winter. Now I'm driving a bit more so it hasn't got to that point. Just a little moisture. It's normal for cooler climates, you're just catching it in a can instead of it going back into the combustion chamber and getting burned. Some may claim of a bad head or intake gasket but that's not the case.

[Scottydoggs]

before i did my lim gaskets the oil cap would be all yellowed up and slimy in a weeks time. its as clean as the day i did the lim gaskets still to this day, not a drop of condensation under the cap. even in the winter. and all i do is short trips. and it sits for days on end sometimes.


but being this is a 5.3 its not the same animal. the catch can built up the condensation i bet, not the engine.

[DirtDog]

Yea Scotty that's my thinking as well

[02NavyBlue]

before i did my lim gaskets the oil cap would be all yellowed up and slimy in a weeks time. its as clean as the day i did the lim gaskets still to this day, not a drop of condensation under the cap. even in the winter. and all i do is short trips. and it sits for days on end sometimes.


but being this is a 5.3 its not the same animal. the catch can built up the condensation i bet, not the engine.

Yeah all engines seem to be different. Mine just cant take short trips without getting lots of moisture trapped. Must be a bad pcv system or something, my pcv valve is new. I've never had issues with coolant in the oil, the foam wasn't too yellow, and the condensation never smelled like coolant, just water. (I have aluminum lim gaskets) And the water froze on the oil cap too.

[Scottydoggs]

mine used to have water run off the cap. its a scary thing. but like i said, bone dry since the lim job.

[nos4blood70]

My friend's Speed3 had a catch can and we emptied it last week. Same thing came out and we freaked out. Turns out it is normal for winter and nothing to lose sleep over.