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What does it mean when the small oil can light comes on?

1 Answers

DeJonathan

07/29/25 7:44pm

When a small oil can light appears on the car dashboard, it indicates an oil pressure warning light. If this oil light remains on after the car starts, it means the oil pressure is insufficient. Here are the relevant details: Causes for the oil light to illuminate: Insufficient oil level, which reduces the oil pump's output or prevents it from pumping oil due to air intake, leading to a drop in oil pressure. Overheating of the engine can thin the oil, causing it to leak excessively through gaps and resulting in reduced oil pressure. Damage or excessive wear and improper assembly of oil pump components can cause the pump to fail to deliver oil or deliver insufficient oil. Improper clearance between the crankshaft and bearings—too tight will increase oil pressure, while too loose will decrease it. Clogged oil filters or oil suction screens can also reduce oil pressure. Faulty or malfunctioning relief valve: If the main oil passage relief valve spring is fatigued, softened, or improperly adjusted, or if the valve seat and ball bearing mating surface is worn or stuck with debris, causing incomplete closure, the return oil flow will significantly increase, leading to a drop in main oil passage pressure. Incorrect oil selection: Using the wrong oil or an inappropriate grade can increase oil leakage during engine operation due to low viscosity, thereby reducing oil pressure. Oil leaks or blockages in the oil lines.

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