Most likely a perforated exhaust riser. If not that, either a blown head
gasket or warped/cracked head. Bad news in any case.

"Matt" wrote in message
...
My engine oil recently almost doubled in capacity when i changed the oil
the
other day. It is gray / milky looking. Suggestions from another post
said
have a mechanic look at it becuase it might be a warped head. Is there
anything else it could be? Also do you recommend I get it service before
the winter?