Just had HG and studs done at dealer (out of pocket but that's another story). The day after I got it back I saw about a 3 inch round spot on my driveway. It never leaked anything before. I got under there and cleaned the area thinking maybe it's just some fluids from the job. I saw the same thing the next two days so I took it back to dealer. they said they cannot duplicate it. I just drove it home tonight after getting a ride from my very annoyed wife. I put the white paper mat that the dealer puts on the floor under the truck and left it running for a bit. Within a few minutes I have a small spot. It never leaked before. It is coming from the rear driver's side of the oil pan. Frustrated as hell to say the least.