I had to nag my mother-n-Law to check and add oil to her A6. Consumption of crappy oil was partly to blame, much better now. Her old Crown Vic had a rusted oil pan that would let oil permeate through. Many a time I would add 3-4 quarts for her, mostly old cans of QS from her basement. My wife's friend, a VW 2.0 owner bought a Certified used car that was delivered 1q low, I topped it and told her to get a change. She showed up after a long hot summer with just 1q remaining. Pennzoil Long-Life took care of her for a while. My wife is not speaking to her now, I wonder. Not always females are to blame. My buddy needed a gallon to top-off his 4-Runner. People buy engines every day from this BS.