went to change the oil and noticed it was down almost 2 qts. Never checked it after the last one and am kicking myself now since we had walmart do it. I hope they didn't short us. I can't see it burning almost 2 qts in the last 3k.
Now you might really burn oil due to lack of....I always check the oil after a change not only for low oil level but also too much..........
They might have shorted you......but I have seen stock 6.1's that use a bunch of oil.....most of it either through the PCV or the breather tube depending on the CAI.