I've been pouring over the archived posts and it sounds like I have a couple issues pending. I just went from a very sporadic 1 quart of oil consumption per 1500-2000 miles, down to 1 qt. in about 600 miles. Still no smoke, still no leaks or drips when sitting. It only seems to lose oil when running. I have been keeping an eye on the arches, as I do have a little bit of oil seeping out there, but this is more oil and more towards the front. So, here is the list: 1) Leaking/ oil pan arches ~ front and rear 2) Another leak up front ~ I'm guessing maybe oil pump o-ring or ??? 3) Impending head gasket PM ~ a couple scares, but I'd like to do it my terms From what I read and gather by looking at it, each of these would be much easier with the engine out of the truck. At what point is it worth pulling the engine? That sounds like a bitch in and of itself, but I'm wondering if the PITA of engine removal would cut the work load of these jobs to make it worth it in the long run. I'll have the time this summer to have a little down-time to get it all done, but I don't know if I really have the space to pull the motor. Any suggestions?