The car is 13-19 years old, lifter tick is pretty common. You can try an oil change with the correct amount of GOOD oil ( Mobil1, Royal Purple, etc) and Sea Foam.
With the amount of oil you are describing I'm gonna agree with K and say the seals in your turbos are shot....It could be other things but this comes to mind first, especially since you say "mist" and not smoke. When you get on it does it smoke real bad?
What area do you live in?
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Originally Posted by Automobile Magazine
The 300ZX Turbo is a dance; it's a song; it's rolling, roaring automotive art. There is no color that doesn't suit it. There is no mood-lifting chemical substance it can't replace.