I went to fill the reservoir and it filled to the top of the neck. Then it proceeded to drain out onto the ground behind the front wheel in a nice clean stream. But it did not totally drain the reservoir. So my question is, is there an overflow tube or something limiting the capacity? or do I have a crack in the reservoir?

I tried to check, but it appears that they hung this part from a string and built the car around it. I do have the warranty to fall back on, but figured someone here may have info.

 

There's an overflow.

 

Stop pouring when it appears on the ground - by that time you will have wasted about a liter!!!

 

My '04 does the same thing. There is an overflow somewhere on the tank and this prevents you from overfilling the tank. Just fill it until you notice the spillage.