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If your engine is damaged from no oil, you’ll notice a lit-up oil pressure warning dash light, a burning oil smell, grinding noises, a smoking or overheating engine, and overall weaker engine performance.
Engine oil is the lifeblood of your car—it lubricates, cools, and cleans your engine which keeps it running optimally. While it's vital to keep your engine oil clean and topped off, it’s easy to forget about maintaining your car’s engine oil—even when your car gives you a heads-up that it’s time for an oil change.
Putting off oil changes for too long can have devastating effects on your engine and may even cause irreversible damage. So, how can you tell if your car engine is damaged from no oil, and what can you do about it?
Jerry
, thecar insurance
expert andtrusted comparison tool
, is here to answer all of your questions about engine damage from no or low oil. We’ll cover the effects of no engine oil, the causes of low engine oil levels, how to tell if your engine is damaged, and what you can do to get your engine running optimally again.Let’s dive in!
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Find insurance savings (100% Free)How to tell if your engine is damaged from low or no oil
Your engine may not show obvious signs of damage from low or no engine oil, but nine times out of ten, you’ll likely notice a combination of the following signs:
Lit-up oil pressure dash light
: This is the clearest way to tell that your engine is suffering or will soon get damaged from low oil levels. This light comes on when your car’s computer system senses your engine oil levels are too low. Bring your car to an auto shop immediately if you see this dash light come on.Burning oil smell: If you notice that acrid burning oil smell inside your cabin while you’re driving, you could be dealing with dangerously low oil levels. The smell could indicate a leak, or it could be a sign that you’ve been driving too long without topping up on your oil. If you notice this, pull over as soon as possible to prevent further engine damage and call a tow truck.
Grinding, clunking, or knocking sounds: Your engine oil lubricates the many different parts of your engine to keep it running smoothly. If you notice strange grinding, clunking, or knocking coming from underneath your hood, your engine could be seriously damaged from low oil. Bring your car to a trusted auto shop as soon as you hear strange noises from your engine to prevent further damage.
Inefficient engine performance: If you notice your engine has to work harder and you’re spending more on gas, your oil levels could be low enough to damage your engine. Check your levels or
bring your vehicle in for an oil change
.Overheating engine: If a red engine light appears on your dash or your hood starts to smoke, this could be a sign that your engine is overheating from low oil levels, causing serious damage to its parts. Call a tow truck immediately and bring your car to an auto shop.
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What causes low engine oil?
All cars need regular maintenance to keep them running smoothly, and routine oil changes are no exception. Your car may have low oil pressure because you’ve skipped one too many routine oil changes. If you suddenly have low oil pressure despite keeping up with regular maintenance, the following causes could be to blame:
Oil pump failure: Oil pumps make sure your engine oil flows through your system efficiently, so when the pump fails, your oil pressure lowers and oil can’t move through all the parts of your engine like it used to. This can severely damage your engine.
Wrong oil: Oil viscosity varies depending on the make and model it’s intended for. If you fill your car with the wrong oil type, your oil pressure will be negatively impacted and your engine could be damaged in the process.
Oil leak: If part of your engine is cracked or broken, oil may leak and lower your car’s pressure. Look for pools of oil on the pavement when your car is parked to see if your engine is leaking oil.
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By Katherine Duffy
Updated on Dec 31, 2022
Reviewed by Melanie Reiff, Staff Editor.
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Katherine Duffy is an insurance writer with an MA English degree at Wilfrid Laurier University. She has six years of academic writing and tutoring experience. Katherine’s dream car is a Mclaren 720S in that classic Mclaren orange color. When it comes to dream cars, go big or go home, right?