The oiling system is a closed system and pressure will be fairly constant throughout the system. From the output of the pump to the heads it will be very close to each other.

 

Oil pump pressure is in the pump and oil gallery feeding the bearings and valve train.
Crankcase pressure is the air pressure in the crankcase from the piston movement released into the hose to the front of the throttle body.

 

And in the SS, crankcase pressure is released through the internal PCV valve, directly into the intake manifold. It can only be released through the PCV valve if there is enough vacuum.

While boosting, the pressure is released through the braided stainless hose at the back of the valve cover, into the mouth of the turbo.

Ring/piston wear/damage can cause excessive crankcase pressure, made even worse by boost pressure, forcing more oil vapor into the incoming air stream.

There was a symptom in one of the OPs other threads that had me exploring the possibility of a clogged PCV valve. I don't remember the symptom now, but I concluded that it was extremely unlikely.

Now this symptom had me thinking about the PCV valve again, asking myself if there was any way it could cause coolant and oil to mix. But, no, I can't think of any scenario where that would be true.

 

This is quite obvious. How did we get crankcase pressure and oil pressure confused?
Well if I wasn't confused I am now.
What are we working on again? Yikes.

 

Well, golden color, normal oil color (why does it still look new in the dipstick but black if I were to drain it?)

And no of course not. Always 50/50 orange dexcool premix.

 

Not sure if this is related...car doesn't smoke until it's warmed up a bit. Then even with grandma driving (2k-2.5k rpm) it will still smoke with vacuum. (More so if I give it throttle to push it all out)

judging by all the terms here I think I'm in over my head on this one and will just try to take it to the shop soon for an inspection at least. (I can probably do the work once I know what is wrong with it)

 

I'm guessing that the lost coolant is going into the combustion chamber. Most is exiting through the exhaust, some is going past the rings and into the crankcase.

 

Any thoughts on how? Or where I should start looking for bad seals/rings/gaskets??

 

This test might provide some important information.

https://www.chevyhhr.net/forums/how-...-engine-56053/