Hi, sorry for the lack of info. I didn't have much time to type this morning. The truck has the 5.7 350 Vortec. Driving is every week, 5 miles to work each way. I go back home at lunch every day to do work around the place. The oil never warms up the whole way by the time I arrive. Then, on weekends I take a 70 mile one way trip to my Grandparants to snowboard. Im sure the truck doesn't mind the highway driving to burn off the junk that builds up through the week. It has piston slap if it is dead cold, but goes away after 30 seconds or so. I fire the truck up and drive it right away, but am easy on it until the oil pressure dropps to normal pressure. (40 PSI crusing) It has been leaking oil slowly (at least thats what my driveway shows!) and I was getting sick of loosing a quary every 1000 miles. I switched to the maxlife and it reduced the leaking to a quart every 2000 miles. I am running Mobil 1 High Milage 5W-30 now, and hope to change the rear main seal when I change the oil. It's warming up enought to lay out in the driveway and do that job now.
