Hey I've got an 04 with 03 motor 6.0 with 155/30s I just got new heads, studs, egr delete, and an ssx turbo. I drove it around after I left the shop and no leaks at all. Then I went home and went inside for about 30 minutes and when I went back outside there was coolant everywhere coming from behind the pulley under the altnater pulley. Could it be the intake manifold donut o-ring?? And why once I shut it off??