If your car had 50,000 miles,
If your car had 50,000 miles, I would answer you like this: "You have a car that has a terrible problem." But your car is actually being normal for an old car. Old cars use oil by various leaks, by worn and clogged piston rings, and by leaking into the cylinders past the valve stems. In summary, it is normal to use that much oil. So what can you do? One: Learn how to check your oil level and how toput oi in your Prius. Two: Keep a written record of what you do. "At xx miles I added yy liters." Three: Learn how often you shouldadd oil by doing this for several months. Four: Make a habit of checking and adding oil. Five: Learn to love your old car, and take care of it like you would care for any old person.