Paint like Paste in Coolant? WTF?

[KGParts]

Just bought another 7.3 yesterday. Picked it up a day after previous owner sent it to ford to have it fixed (rear heat was not working).
Day he got it back it had splashed coolant next to fill, figured they just missed when filling it back up as i believe it was a heater core that was replaced.

This morning there was this strange brownish with mixed in bubbles of green (coolant) puddle under the truck. I opened the hood and looked in the fill and noticed from the outside it looked low (green only about half way up). On closer inspection, the level was actual correct but it has this brownish paste with the consistency of a latex paint. I took a random piece of wood as a "dipstick" to see what it was.

Picture attached.

What the hell is that and what would cause that?! And how to get rid of?
Thanks

[kanuck15]

that would be your oil cooler being bad, allowing oil and coolant to mix, same thing happened to my dads truck, Idk as for fixing it he had a shop do it but to flush all that gunk out of the coolant system is bad, Fortunatly its oil getting into the coolant and not the other way around, still its not something that can be driven with really

[tubular031]

check the oil for a milky mess too. If you have water in the oil DO NOT run the truck.

I have not seen something like this on here so I am sorry to post to another forum...
Oil Cooler How To...since it's that time of year. - Powerstroke Nation

[kanuck15]

eh no worries, its all in the name of fixing the mans truck

[KGParts]

gggrrreat. just looked at engine oil while it was cold and it is showing all green with just the very tip as oil... when warmed up this didnt show. oil looked good day I picked it up (day after the oil change and heater fix)

[KGParts]

so... the oil cooler would be the only real culprit to this mess or could it be something worse, the oil cooler just being the most obvious?

[03-blue-Powerstroke]

I would show it to the dealer if they were just working on it...

[kanuck15]

well its the first place id look, i hate to jynx the operation but the only other place i know of for oil and coolant to come into contact is the heads so blown head gasket?? but when my dads truck did that it was 100% the oil cooler

[bigcountrysg]

Originally Posted by KGParts

gggrrreat. just looked at engine oil while it was cold and it is showing all green with just the very tip as oil... when warmed up this didnt show. oil looked good day I picked it up (day after the oil change and heater fix)

This makes no sense at all. Being oil floats on top of the water. When you pull the dipstick. If there is water in the oil. Then the oil would be at the dipstick and the rest would be water.

Most likely it is the oil cooler.

[KGParts]

Originally Posted by bigcountrysg

This makes no sense at all. Being oil floats on top of the water. When you pull the dipstick. If there is water in the oil. Then the oil would be at the dipstick and the rest would be water.

Most likely it is the oil cooler.

after thinking about it after posting.. I thought the same thing.
It is hard to see, but everything above the tip is greenish... very tip is oil"ish". Here is the dip stick: