Originally Posted by wingdr
The first place to check is the drain plug...I know you said you can't see were its going... but if it started all of a sudden...did you just have an oil change? Is the oil filter dbl gasketed? I have seen oil leaks only when hot and under pressure...when stopped nothing evident 'cept a thin coating from leak area...sometimes hard to see and harder to find, Tim
I second this, check for oil residue, if you can put a sheet of cardboard under it when it's stopped to see if you get oil on the ground. A co-worker of mine got an oil change and afterwards noticed a lot of oil underneath his vehicle and on his back end. The issue turned out to be a filter had a notch/cut in the gasket.
Even if you can't locate it get a service call placed and take it in!