RE: Oil leak - sender unit?
Before installing the new pressure sending unit, I thought I would check to see that it was really the source of my leak. I disconnected the connector and started the engine. I could see oil being pumped out the top of the connector pins so I knew the unit needed to be replaced.
Had to buy a special socket for removing sending units as none of my deep sockets worked and I couldn't get a wrench in the space. The socket only cost $5.00 and what a snap to replace. Just unscrew, wipe the area clean and screw in the new sending unit. Hook up all connections and test. The operation took less than 10 minutes and the patient is just like new.