I can kinda understand it if it's an old POS that burns so much oil that you can completely replace the oil with new oil before the 3k mark just by pouring more in to replace what has been lost. I ran a car like that for a few months once. Burned about a gallon of 3.99 Discount Auto oil for every 15 gallon tank of gas. Yeah, the #1 cylinder piston rings and piston ring lands were pretty much gone. They actually crumbled off in our hands when we pulled the piston from the junk block a few years later just to see the extent of the damage.