Engine Oil Cap Looks MILKY BUT Head gasket is not blown and NO Oil and coolant mixing or Overheating

If the engine oil cap looks milky and let's say the head gasket is not blown, oil and coolant are not mixing and the car is not overheating then the problem is something else. Stay tune to find out what the problem is. The issue can be caused by many things such as sludge and failed pcv valve.

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[tyronewalker]

I'd found what looked like Cheese-Whiz in my oil cap. Turned out the gasket on my oil cap was shot and was ducking in moisture. Great work sir.

[fleuryelite]

Smart guy, not out here to rip people off, keep it up man your helping alot of people

[riprice]

You're a smart dude 😎
That solved my answer pretty good
Not that long ago I was straddling my engine over on top of it I cracked my PCV valve put a janky connection back on to hopefully resolve my issue ...

[fawzisdudah]

If the reason is from the blowby then the oil consistency will be the same everywhere in the engine, obviously due to oil circulation. Since the oil is okay, but the pcv is stuck, it suggests that the reason is stuck open pcv valve and the vapor comes from the intake with the air. Any vapor that gets in the cylinder will come out with the exhaust. However some vapor will enter the crankcase via the stuck open pcv valve. The vapor will mix with some oil/blowby and when the engine start to cool it will condence on the bottom side of valve cover and the oil cap, the top areas that cool first.

This is my explanation, and Allah knows best.

Thank you for sharing your experience with us. I'm happy I've subscribed before.❤

[harryd]

PCV valve isn’t a maintenance item for GM but it is for me. I change mine every 30, 000 miles (or 6th oil change). The valve is $9.00, cheap insurance as a new engine is $4, 000.00 and up.

[rankmeuptoday]

Thank you! I thought my head gasket went bad and it was the pcv valve

[tonisula]

A true mechanic 👍👍 thank you for the help

[veggiepowered]

Hope This Is All That Is Wrong With My 1997 GMC Safari Van my Dipstick Is A Quart Over But No Bubbles On The Dipstick

[nickb]

The reason is caused by short journeys when the bottom half gets warm but the head doesn't

[ivanvelazquez]

I have a 2015 chevy cruze LS with the 1.8 liter engine. The oil was once milky white but not the dip stick. I tried a block tester kit from Harbor frieghts, and the results i got is more than sure a blown head gasket. Just want your opinion

[E_STI]

If you don’t run an oil catch can and idle your car a lot during the winter you get a lot of blow by under the cap.

[maxlife]

Awesome that was huge help great information

[JisINSANE]

I pulled the valve covers on my l37 3800. It had alot of milk under the valve covers but no where else in the engine. Thermostat was not letting engine heat up enough. I'm also doing the PCV. Hope this fixes it.

[Tommy-mjcb]

Do you happen to know if this would make the oil gag go from being in the middle to all the way low whenever i take my foot of the pedal

[StreetR]

How about white "milky" dirt in coolant fluid in motorcycle?
Can be old used fluid / water condensation or got any ideas?

[TheCrazyR]

My 350 SBC is doing this but I don’t have a PCV system, I just have breathers and a carburetor

[Doviruses.existbaileyonodysee]

im wondering if on a little tk barina this could be a problem.
oil, water and temps seem fine (cap apparently was a little milky),
But the exaust manifold it gets smokey hot (starting from where top of catylic bolts on which they swapped out)

i Thought it may have something to do with clogged exhaust back pressure (so removed 2 sensor (pre/post cat )Thought it worked, but then put them back in and it didn't smoke while i was testing it. . .
but apparently she smoke up again 🤔

[carlosmuler]

Very interesting and helpful information.

[mulljacob]

My V6 3.5L Toyota with just 20K miles on it is FULL of oil mixed with something. I mean the "oil" is filled so much it's filling up the valve area as I understand it. The coolant isn't low. I don't believe condensation can't form a gallon or two of water in your oil and I don't know what it is or where it's coming from. I just had the oil changed 500 miles ago at the dealer. I'll find out what it is when I get it towed to the dealer in a few days. It was running smoothly as silk the same day I discovered this problem. I obviously don't want to even start the engine like this again. I'm already afraid there is cylinder wall damage... But no signs of it as far as burning oil out the tailpipes.

[Ham-t]

Mate you have best explained channel. Are you in Australia? I need someone to figure out what’s up with my Pajero. It misfire when restart only from cylinder 6, sometimes I get code for cylinder 6 misfire and many times no codes. I have a little bubble in radiator and rust even after flush, heater wasn’t working and now half working. We switched around coils and injectors and same code came back. What do I do all mechanics seem can’t be bothered to figure it out