You might want to watch it and see if it continues. Expansion / contraction of the seal can sometimes cause a temporary leak. While not a D/A, I had an Explorer that if the trans got a little too warm because of the poor cooling it had, like pulling a mountain or backing into a site) the seal would expand to the point it would leak. After sitting for a few hours it was fine, no more leaking. I was told I could get away with it happening a few times, but eventually it would not reseal and would need to be replaced. I was planning on adding additional cooling if we haden't outgrown it first.
