Car engine oil should be filled between the upper and lower limits on the oil dipstick, with around three-quarters of the distance between the upper and lower limits being the optimal position. It's preferable for the oil level to be slightly closer to the upper limit. Checking the oil level is recommended when the engine is cold, ideally 15 minutes after turning off the engine. Checking the oil level in a hot engine state may result in oil splattering and less accurate readings.
Steps to Check the Oil Level:
1：Prepare a dry paper towel, locate the oil dipstick handle in the engine compartment, pull it out, and wipe off any oil residue from the dipstick head.
2：Insert the dipstick back into its original position, ensuring it reaches the bottom of the oil sump. Wait a few seconds before pulling out the dipstick.
3：Examine the oil adhesion on the dipstick to determine the oil level. If the oil level is between the upper and lower limits, it indicates an appropriate oil quantity.
4：If the oil level is above the upper limit, excess oil needs to be drained. If the oil level is below the lower limit, it indicates insufficient oil, and oil should be added promptly. Running the engine with insufficient oil can lead to damage.
Effects of Excessive or Insufficient Oil Levels:
·Excessive Oil: High oil pressure may cause a small amount of oil to enter the combustion chamber, leading to oil burning. Incomplete combustion may result in increased carbon deposits. Too much oil can also cause increased pressure, leading to oil leaks.
·Insufficient Oil: Inadequate lubrication can cause severe wear on engine components. Oil also plays a role in cooling and dissipating heat; insufficient oil can lead to higher engine temperatures, risking engine damage or cylinder misfires.
Maintaining the correct oil level is crucial for proper engine function and longevity. Regular oil checks and timely adjustments are recommended to ensure optimal engine performance.
