When I start up my Z, all this white smokes pours out the back and it's a lot. I haven't had the oil changed in a while so is that the culprit?

Thanks

 

White smoke? And its a lot of white smoke? Sweet smelling maybe? Coolent is what I would say and think.

 

usualy means a head gasket or nicked water journal.

I'm sorry but nissan makes the "Z" chevy made a CAMARO or if you have to a Z28, not a Z sorry its just a pet peave of mine

 

The nissan "Z" true name translated is "my fair lady" so some smart marketing guy used the option numbers just like GM did. I don't know or care who was first. (240Z or Z28) My vette is a "Z51"

White smoke could be oil, Check the plugs.

 

Pure white smoke is coolant, If its aliitle grey then I would say its probably oil.

 

Yea it's grayish, I put a quart of oil in the car, do you think that's it?

5W-30? That's what it said on the engine oil cap.

 

White smoke = coolant = head gasket or intake gasket
Black smoke = rich = fueling, timing or tuning issue
Blue smoke = oil = rings/valve seals

Check your oil level and your water level
One will show you where the problem is