I am pretty sure it was just condensation. I rented a very nice cooling system tester from Auto Zone for free. This was a great deal. You have got to love the Zone for stuff like this.
The system held 25 psi with only a 1/2 lb drop in over 10 minutes. In addition, the instructions said to start the car with the tester connected on make sure that there is no quick pressure build or needle fluctuations. I did this and all was ok. The system seems in great shape. I changed the oil and finally got the oil up to 180 and most if not all the remaining cloudness is gone.
Thanks for all your help.
I was gonna suggest the exact thing, until I got to the bottom of the thread...
I also rented the autozone pressure tester. GREAT DEAL. You can purchase one for 5 bucks more, but how often do you use it??
When I tested mine, I put in 30lbs and it held for 18 hours, unmoving (once I fixed the leaks that is). I had problems with my head studs trickling coolant past the threads and ARP sealant.
The fact that your's lost pressure in 10 minutes tells me that you're experiencing some kind of leak somewhere...
Did you see anyplace where the coolant may be leaking? Or actually hear the hissing of pressure? I found the head stud leakage by using a light weight household oil and looked for bubbling, while the system was at 30 psi.
My rental didn't have the instructions, so I didn't check for pressure surges and such after starting...
But I am worried about the amount of leakage you're experiencing.
What if it is a head gasket?? What about the intake gasket? Dumping ethelene glycon into oil in not healthy for the motor. I can't remember if the coolant would float or sink in oil... but if I were you, I'd keep a VERY sharp eye out for more cloudiness, at the LEAST. (if it does sink, you should be able to crack open the drainplug and see if its cloudy)
I think it best that you should track down the coolant leak, (some of you might disagree). Either buy a UV dye kit, or go to a shop that has one. I may be overreacting, but if it seeped all winter, imagine how much will leak under heat(expansion) and pressure.
Get some more opinions first, though...
I don't want to get you tearing down your motor UNLESS its absolutely necessary.