2010 GMC 1500, 5.3L, 4x4, 5W30 syn-blend, and a little aggressive driver... I would say I burn about 1qt @ 4K'ish. I just don't count, I just check the dipstick and level it out whenever I come to think of it. As for this truck, the REASON for the oil consumption is I have that (I don't know what those are called) 8cyl-to-4cyl thing. I know it can be turned off (disabled), but I just leave it alone. Just recently, I was losing oil pressure, so the mechanic took the oil pan off and replaced the o-ring (said it's common problem for chevys, hot/cold cause it to shrink). There was medium oil deposits (not too bad since I often change oil at 30% life left), so all that was cleaned out. Oh, 130K mileage as of now.