Originally Posted by
onehundred80
To reach a low level there has to be a fluid loss and the loss should be obvious. It worked once that night but a short time later it did not ......
Exactly. That fluid does not evaporate, I've had three roadsters and NEVER ONCE added fluid to any of their top systems. If the fluid is low, you will find some fluid tracks somewhere in the car, and they will lead to a pool of fluid in a low spot SOMEWHERE.