You need to fix the leak or you will burn up another starter. Certainly clean up the fluid that is over everything you describe and find that leak. Hopefully it is up topside so you can get to it.

You say the Crankshaft Position Sensor has "fluid" on it. Where is the fluid? Is the fluid on the outside where the electrical connection is and where you place your hand to remove it, or is the fluid just on the inside that is screwed into the bell housing? Have you checked your transmission fluid level; Car running, after a trip so it is warm, and in park.

There are three black plastic inspection pieces that you can remove all on the bell housing. One large one on the front and two smaller rectangular on the bottom. Open them. Do you see engine oil or transmission fluid. It is normal with the age of our cars to see see a little that will wipe with your finger, but if they are dripping wet up inside you may have found your leak. Dry it up the best you can with shop towels then check again in a few days after driving the car. If it is soaking wet again you have a seal leaking. Depending on what fluid you see; Rear main seal (most likely) or transmission if it is up inside the bell housing. If it is on the outside and dripping, the transmission pan is leaking. While your there look closely at the large electrical connection forward side passenger on the transmission. The o-rings go bad and that can leak also.