Bone dry, and around 6 deg.
But one thing I'm just thinking here... The weekend before last, I changed gearbox\diff\engine oil. I'm just wondering if I needed to pop a bit more oil in the engine.
As I mentioned, I wasn't going fast at all - honestly ! (my first time on track with the Z, and just getting used to it)
I guess I'll know a bit more tomorrow, I've seen what the service manual describes as the potential issues. I just thought it was odd that it happened on track, the car felt and sounded normal to me.