possible blown head gasket??? Options

[ian0490]

I got a 94 gt with about 160k on it. Started over getting on me. Looked into the thermostat and it tested fine. No leakage on the floor on the passenger side and no sweet smell in the vents, so probably not the heater core. Before i go into the water pump or the head gasket, i want to check if I'm right. When i emptied out the radiator, the water in it is oily brown looking. Im assuming the oil is mixing in with the water. I haven't dumped out the oil in the pan yet but when i looked at the oil cap it had slimy white gunk on the inside. I'd it safe to say it's the head gasket or am i over looking something?? I'll include pics similar to what it looks like.

[ian0490]

Updated it with an image of what the oil cap looks like. Read that it could be just condesation from water in the engine but since I used water int the radiator, can this be the same as "coolant mixing with the oil" in the case?? These are generic images as I dont have a good camera.

Dip stick looks clean though. I will empty the oil pan tonight to see if anything is milky in the oil.

If is is rust, how can I clean that out? And if only rust, would that cause overheating?

This post has been edited by ian0490: Mar 5, 2014 - 10:59 AM