Have a 05 80k miles ran great but used some coolant. Finishing up doing gaskets with all updates and figured I would air test. Had air on for about 20min and as I went to unplug the air I heard noise from both sides. Had a gurgle noise and it seemed the second injector from the front on both sides was leaking from the nipple o-ring. So I took it a step further and hooked a hydraulic pump to the system and sent 2500psi of new 15-40 threw it. No noise, mist, or spraying. but again it looks like I might have some leaks at the nipples. It takes a few minutes to accumulate oil on top of the injector and I don't know if this is to be expected or should everything really stay dry 100%. My garage is only 50'F so I have no idea what the leak would be like with hot oil. I did order a tool and the HHC O-rings, guess I will re-seal and re test. Any ideas?