What could it be?

I have gotten the head machined, put a new head gasket in and the problem is still here.

What gives? It runs extremely well, doesn't overheat but the coolant is literally pudding.

There is no coolant in the oil, there is no (to my knowledge) combustion gases in the coolant, and it doesn't burn oil or water.

I'm about ready to just buy a new motor for a grand and put it in there.

Could the block have cracks in it???? Could the block itself be warped? It doesn't make sense.

The only thing the guy that I bought it from told me is that it over heated and oil was in the coolant.

 

so if the oil isn't leaking or getting lower then how is there oil in the coolant? where is this oil coming from if ur oil level is constant?

 

I should have been clearer with this. The oil level is dropping, about a quarter every 300 miles and the coolant gets milk-ier and milk-ier

 

automatic? if so its the radiator

 

nevermind

 

assuming compression is good it must be a pinhole crack in the block ... Not common but does come up from time to time here

 

Ya, that's the first thing I replaced, the radiator. Wish it was a simple fix like that

How does that even happen? I'm just so confused as to how oil get's into the coolant but not the other way around. Like when the car is just turned off so there is 0 oil pressure but the coolant is still pressurized. It would flow from the coolant jacket to the oil. But it doesn't.

 

There is a lot more pressure in the crank case than is in the cooling system while the engine is running. Given, yes, when the car is turned off only the coolant is pressurized but it's only somewhere around 14 psi vs 60 psi at times in the crank case.

 

you have to check the deck on the block as well as the head. They're both aluminum and if the head was machined to a nice clean tolerance what would you guess a block that has been over heated could be?

 

I guess it's possible. I don't know how hot or how long the car was run. But typically the block doesn't warp all that much just because it's so large. It's a massive heat sink that soaks up all the head and dissipates it better than a small aluminum head.