What is the indicator for low engine oil?
2 Answers
The indicator for low engine oil is the yellow oil warning light. Below are the specific functions of engine oil: 1. Shock absorption: When the pressure at the engine cylinder port rises sharply, it suddenly increases the load on the piston, piston chips, connecting rod, and crankshaft bearings. This load is transmitted and lubricated through the bearings, providing a cushioning effect against impact loads. 2. Rust and corrosion prevention: The lubricating oil adheres to the surface of parts, preventing contact with water, air, acidic substances, and harmful gases. 3. Lubrication and wear reduction: There is rapid relative sliding between the piston and cylinder, as well as between the main shaft and bearing shells. To prevent excessive wear, an oil film must be established between the two sliding surfaces. A sufficiently thick oil film separates the surfaces of the relatively sliding parts, thereby reducing wear. 4. Cooling: The engine oil carries heat back to the oil tank and then dissipates it into the air, helping the radiator cool the engine.
Last time I drove long distance, the engine started making knocking sounds like little hammers tapping. I immediately pulled over to check the dipstick and found the oil level had dropped below the minimum line. That red oil can warning light on the dashboard had been on for a while, indicating low oil level. Running low on oil causes engine friction and overheating - at best it leads to increased noise and fuel consumption, at worst it can cause cylinder scoring or bearing failure with terrifyingly high repair costs. Common causes are oil pan leaks or exceeding oil change intervals. I've developed a habit of checking oil level every weekend by pulling out the dipstick, wiping it clean, reinserting it, and ensuring the reading stays between min and max marks. Never ignore unusual sounds while driving - whether it's hissing or increased vibrations, stay alert. Always top up with the oil grade specified in the manual to prolong engine life. Safety first.
