I took a flight to the adirondacks this weekend on Friday afternoon. I asked my brother to pick up the d90 at the airport for me the next morning. He said when he got there he saw a big puddle of red fluid under the truck near the front left of the truck. My first thought was transmission fluid, but too far forward. Then he said he couldn't turn the wheel when he went to move it. Then I thought power steering fluid. He left the truck where it was and I came home sunday. Sure enough the puddle was right where he said it. I had brought some power steering fluid with me and added it to the resevoir. I watched it overnight, the whole drive home and today as well. Not a drop leaked. If it was a small leak I wouldn't think anything of it. This was a very large amount of fluid and the resevoir was empty when I went to fill it. Any idea how this could happen and then not repeat itself? As an aside, I double checked the transmission fluid this morning and it is defintiely not that....