Celsior2K5

Hey guys,

I drove my 91 LS 400 for about 15 minutes this morning. After I parked it, I had left it alone for about 3-4 hours. When I came back to my car I had opened up my hood to look at something when I noticed that my engine coolant reservoir was empty. However, there is a line that states the level it should be at when the engine is cool (or cold). I turned my car on and all of a sudden a bunch of engine coolant came back into the reservoir and was almost up to that "cold" line.

Is this normal? Why does my instinct say its not?

Any feedback would be greatly appreciated. Thanks guys.