No sighns of coolant lost which looks real good, no oil in it. But the engine oil looks very milky.

Neil

 

has the car sat around for awhile? When I put my t/a away for the winter and change the oil come spring it is usually milky or muddy looking. I can only assume it's from condensation because with the next oil change it's normal.

 

Its actually a friends car, the motor is brand new and the car is daily driven.

 

Since car and motorcycle oil are pretty damn close I'll throw in my .02. When I rebuilt my engine on my old bike I filled her up with brand new synthetic oil. I checked the little window to tell me what the oil level was at, and you could see it looked somewhat milky. After I ran it for a few days it faded to the dirty brown liquidy stuff we're all so accustomed to working with.

I think it's somewhat normal.

 

Hate to say it, but as I was told milky oil is almost always coolant. Hope it turns out to be nothing serious though

 

heres what ya do pull valve covers off. If theres alot of yellowish milky oil stuck in em my best guess you would have a blown headgasket. Oil will always be milky with one so I would check that out first.

 

I don't think it takes very much coolant to turn your oil milky, so it's still possibly coolant. I'd highly suggest that your friend take a sample of that oil and send it in for analysis as they could tell him for sure if it's coolant.

 

Couldn't you just do a compression check to see if its the head gasket? That is where I would start, or just change the oil and see if it happens again. Be sure to change the filter too, for it may have coolant deposits in it, if that's even what it is. I have never changed my oil and had milky oil. The only time I did is when my S-10 scattered the #5 piston at 6000 rpm. It cracked the cylinder wall into the waterjacket, and leaked what wasn't burned into the oil. Good luck to your freind though.

 

My Dad cracked the block in one of his old pickups and the oil was really milky. I am not saying you have a cracked block but it is definately coolant.
My Dad was in denial, I said "Dad, its toast" and he said "but its holding good milk pressure"

 

in my experience it has always been coolant or water. If you wanna know what it should look like dump a little used oil and coolant/water in a pan and leave it a few days. the bottom of one of my drain pans is milky from mixed use. if it is coolant it will be gunked all over the engine internals, pull a valve cover like someone suggested and take a look, if your scooping out milky oil then you'll know. Be careful, too much water will ruin main and rod bearings from loss of oil viscosity.
a bad head gasket will not always cause burning oil or oil in coolant. I just changed one where the only symptom was blowing water out the overflow.
Perry

 

Oil+water = "milk".