Uhhh... what do you mean by "almost all gone"? How much drained out?

The VX is water cooled so engine temp is largely determined by the thermostat. If you're burning oil it's not caused by high ambient temperatures. You did overfill it though. Oil change with new filter should only take about 5 quarts. I've seen overfilled vehicles blow hellacious amounts of smoke but in all but one case the situation was easily rectified with proper oil level. Have you tried draining out a quart to see if that improves the situation? I hope it does! Almost all gone is not good though so keep an eye on that oil level!