nba1341

Just changed my oil to mobil 1 10w-30 synthetic


Was checking the dipstick and its like white milky


is this additives in the oil?

1slow67

If it is milky that usually means water got in it.

mySAVIOReigns

I would guess (if you've driven lately) with the cold temperatures, the engine did not get "fully warm" and it's an oil/water combination. Oil can take a small percentage of water, so it may be okay. If, however, this was after driving for a long period of time, I would be worried - it means the heat of the engine did not expel the water vapor.

Starfury

That looks a lot more like coolant contamination than any small amount of water buildup. Bad news. Didn't you just do an intake gasket, though?

7 UP Mustang

That usually indicates coolant getting into the oil. How is the antifreeze? Is the radiator down also? It could be a major problem like a cracked head or something like a head gasket. I would remove the plugs and run a compression check on each cylinder, and write them down for comparison later. Good luck.

LARRY

LynnBob Mustang

If you haven't been running the engine much because it is in storage or just not getting run enough on short trips, it may be just condensation mixing with the oil.

Lynn

67mustang302

Smell it. If it has a sweetish anti-frieeze scent in it(along with the other nasty smells it probably has) then you definitely have a coolant leak into the oil. Also, check all your plugs to see if any of them have the same kind of crap collecting on them. Check your coolant level like was mentioned as well, and also check the oil level, if coolant is getting in, the level will rise.

noroof66

I run the same oil and I have never seen it that color, so I doubt additives.

69FB

Last time I had that look it was a cracked head and it was anti-freeze in the oil. Hate to say it.

Flash70

Just curious have you always been using synthetic or only recently changed to it?
But yea hate to say that definitely does not look like water. It looks like coolant to me. My dads 47 chevy has a leaky head gasket and it looks the exact same as that. It is not exciting news lol.