Well, guys I'm more frustrated with myself not knowing more than the Truck having the problems. I have been thinking I have blown head gaskets for weeks due to the solid feeling upper rad. hose. So I have been reading/posting about doing head studs and head gaskets. during this reading I read something about someone having thier truck eating oil. So I start looking around the truck today and notice two oil spots on the ground at the rear of the motor. I pull the oil dip stick to see it only being half full (less than 1500 miles on oil change) and it having a slight green color. Doesn't really smell like just oil either. So, my question is do i have more than one problem? or could this be something like a rear seal? What else can I be looking at? Please help!