Hello all, I have a mystery that I am stumped on. This morning the temperature was -1 here so I go and start my 2004 Range with 4.4 (80k) 15 minutes before I needed to leave for daycare drop off. I heard a slight howelling sound that went away a few moments after start. Figured it was a cold night and just a noise from belt or something. I also heard this noise yesterday when also below 0 degree F. I drove the ten minutes to the daycare and while taking my son out I smelled oil. Thought maybe she was running rich because of the weather. Come out a few moments later and leave and make it a few miles down the road when the LOw Oil pressure Warning sounded also with Shut Engine Off warning. So I went another half mile where I was clear to pull over and shut it down. I got out and looked underneath to find oil front to back even dripping off the gas tank. Oil was everywhere!!! So I called my buddy with the rollback and took it to a shop I have access to a lift. ( I am a TooL Dealer) I put 8 Qrts in and put it up in the air and started it. No leak!! Ran it for almost two hours checking for leaks and check oil level and restart. This was a challenge because the engine was soaked in oil mostly passenger side. Checked front seal and it was dry. REar seal was slighty wet but obviously not the location of the nine quarts. THe valve cover and head gaskets had the slow weap around that was present for a while now but nothing that looked like all that oil came out of. I could not find anything and the oil and Range stayed normal. I drove it home another ten minute drive and checked everything again. No large leak!! This thing drained everything in the matter of moments and now no leak....??? I hooked my scan tool up to it and got the normal cam codes due to the oil issue at hand and cleared it. Check the Live DATA streams to look for abnormality. Idle was at around 850-900rpm and the Coolant temp seem to be high at 220 but I need to find out what the normal is. I did not overheat that I know of. No warnings anyhow. Drove it and no new codes thrown although it might need several more miles to cycle the computer. Runs strong with no knocks or any strange noises. I do not feel like driving it till I figure out what happened. My thoughts......PCV valve stuck because of extreme cold and crank pressure built up and forced oil from multiple locations and then righted itself by the time it was in the shop and the temp was up. ANY IDEAS?