White film inside of valve cover???

[67 B-body]

Didn't you just put this back together?
Does your dipstick show an increase in volume?
Does the dipstick have white stuff all over it too?
If you have coolant going into your oil "head gasket leak", it would have to get into the oil pan,,, then it would be blended right into the oil "by the pump" and cause a milky appearance to all of the oil..... If you're seeing chunks of white stuff only in Valve covers, then I would believe it to be assy lube.

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BTW,,,
EVERYBODY READ THIS.........
I DON'T LET MY ENGINE GET TO 210* AND I DO NOT HAVE WHITE MILKY SUBSTANCE IN MY VALVE COVERS.....
I don't let it get even close to that ridiculous temperature..... 190* tops in my car!

 

[wedge5]

Well all the comments about not letting the motor get warm enough describes my situation to the tee. I started the motor 3x in 3 days and all for less than 5 minutes each. 1 time to start the motor for the 1st time of the year. The 2nd was to turn it around so the front end would be facing the garage door and the 3rd to set the timing. I let it warm up just enough so it would idle. Warm days(55-60*) and cool nights(40-35*). The oil looks good but I will keep an eye out for any turning of the oil to milk.