Engine oil keeps the internal parts of the engine lubricated and working smoothly. Without it, the engine would seize up, requiring a costly repair or a new engine or new car altogether.
There are many reasons why an engine might be consuming oil at a fast rate. Some are common; some are rare, but it’s a problem not to be overlooked. There are also ways to mitigate it as an engine ages.
What is excessive when it comes to oil consumption?
Excessive oil consumption is the consumption or loss of oil at a rate that is faster than “normal.” What’s normal depends on the specific engine, as each one will have its own recommended change interval and may burn oil at different rates compared to other engines. According the James Dunst at bellperformance.com, an average rate is 1 quart every 1,500 miles, and this number can be less than 1,000 miles for performance vehicles. Manufacturers will have a common mileage number for consumption, which you can find in your owner’s manual. It’s important to know that this number can change depending on what oil is used.