1. Fuel dilution: This is the most common cause of an increase in oil volume. When the fuel injectors are not properly sealed, fuel can leak into the oil pan and mix with the motor oil. This can cause the oil level to rise and can also lead to other problems, such as engine knocking and decreased performance.
2. Coolant leak: If there is a leak in the coolant system, coolant can mix with the motor oil and cause the oil level to rise. This can also lead to other problems, such as overheating and engine damage.
3. Excessive oil filter flow: If the oil filter does not seal properly, allowing oil to bypass the filter media, too much oil can circulate in the engine, causing oil levels to rise.
4. Worn piston rings: Worn piston rings can allow combustion gases to enter the crankcase, pressurizing the crankcase and pushing oil into the oil pan. This can cause the oil level to rise and can also lead to other problems, such as decreased compression and increased oil consumption.
In any case, if you notice that the volume of motor oil in your car has increased significantly over a short period of time, it's important to have your car inspected by a mechanic to determine the cause and prevent any further damage.
