After a few days of cold finally got around my truck and found the source of my oil leak, it's coming from a sensor located right next to the end plug of the hpop I believe thats the IPR sensor? Does it make sence? Is my first time dealing with the hpop. How hard is it to fix and what tools are needed. Thanks for any imput.

 

If it's the IPR, it takes a very deep 1 1/8" (29mm) socket. I have a 1/2" drive socket that deep.