Can You Keep Driving When the Engine Oil Warning Light Is On?

[McGraham]

You should not continue driving when the oil warning light is on. The reasons for the oil light illuminating are as follows: 1. 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. 2. Overheating of the engine, which can thin the oil, causing excessive leakage through the gaps and resulting in reduced oil pressure. 3. Damage or excessive wear and improper assembly of the oil pump components, leading to insufficient or no oil output. 4. Improper clearance between the crankshaft and bearings—too tight increases oil pressure, while too loose decreases it. 5. Clogged oil filter or oil pickup screen, which also reduces oil pressure. 6. Malfunctioning or damaged oil pressure relief valve. If the relief valve spring is fatigued, improperly adjusted, or the valve seat and ball are worn or stuck open, the return oil flow increases significantly, lowering the main oil passage pressure. 7. Incorrect oil selection. Using the wrong oil or an unsuitable viscosity grade can increase leakage due to low viscosity, reducing oil pressure. 8. Oil leaks or blockages in the oil lines.